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• User login cycles

  - by Doug Brown

  Just install 12.04-64bit and while I can login using the guest login, I cannot with my user login: it just cycles back to the login screen. I have performed the sequence of apt-get update/upgrade and install of the nvidia-current driver, but got back that it was already in use. The password appears to be recognized, as wrong one results in an error. Have also tried switching to the 2D Unity, without other results.

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• What is SSL Certificates and How Does It Work

  SSL is an acronym for Secure Sockets Layer. The Secure Sockets Layer is a basically a web security protocol that is developed to establish a secure connection between web server and a browser. SSL is... [Author: Jack Melde - Computers and Internet - May 01, 2010]

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• How to cleanly add after-the-fact commits from the same feature into git tree

  - by Dennis

  I am one of two developers on a system. I make most of the commits at this time period. My current git workflow is as such: there is master branch only (no develop/release) I make a new branch when I want to do a feature, do lots of commits, and then when I'm done, I merge that branch back into master, and usually push it to remote. ...except, I am usually not done. I often come back to alter one thing or another and every time I think it is done, but it can be 3-4 commits before I am really done and move onto something else. Problem The problem I have now is that .. my feature branch tree is merged and pushed into master and remote master, and then I realize that I am not really done with that feature, as in I have finishing touches I want to add, where finishing touches may be cosmetic only, or may be significant, but they still belong to that one feature I just worked on. What I do now Currently, when I have extra after-the-fact commits like this, I solve this problem by rolling back my merge, and re-merging my feature branch into master with my new commits, and I do that so that git tree looks clean. One clean feature branch branched out of master and merged back into it. I then push --force my changes to origin, since my origin doesn't see much traffic at the moment, so I can almost count that things will be safe, or I can even talk to other dev if I have to coordinate. But I know it is not a good way to do this in general, as it rewrites what others may have already pulled, causing potential issues. And it did happen even with my dev, where git had to do an extra weird merge when our trees diverged. Other ways to solve this which I deem to be not so great Next best way is to just make those extra commits to the master branch directly, be it fast-forward merge, or not. It doesn't make the tree look as pretty as in my current way I'm solving this, but then it's not rewriting history. Yet another way is to wait. Maybe wait 24 hours and not push things to origin. That way I can rewrite things as I see fit. The con of this approach is time wasted waiting, when people may be waiting for a fix now. Yet another way is to make a "new" feature branch every time I realize I need to fix something extra. I may end up with things like feature-branch feature-branch-html-fix, feature-branch-checkbox-fix, and so on, kind of polluting the git tree somewhat. Is there a way to manage what I am trying to do without the drawbacks I described? I'm going for clean-looking history here, but maybe I need to drop this goal, if technically it is not a possibility.

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• Webpage Construction For SEO - Navigation

  Few things are more frustrating then going to a new page you're interested in and finding out it has horrible Navigation. I mean the kind of navigation that would make Cheech and Chong look like they knew where they were going. A back button that doesn't work, dead homepage link, dead end pages..........you know, you been to 'em, and you never go back to them either.

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• USB Wireless keyboard and wired mouse do not power on at system boot

  - by Victor S

  This did not use to be an issue but, I am not sure why, my USB keyboard and mouse are not powering on after system boot. I can fix the keyboard by taking out and then plugging back in the USB antennae, which makes it work right away, but the mouse, even if I un-plug it and plug it back in, it takes about two-three minutes until it receives any juice and starts working. Any ways I can debug this, or fix it? Thanks!

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• Linux ? ZFS ????????

  - by katsumii

  PR????????????????????????  @IT Special PR:???.com?VPS???! ZFS on Linux?????????ZFS???????????????????????????????????????5 ???Java????????????PC??ZFS????????????? Solaris and OS X (James Gosling: on the Java Road)when I get back to my desk and the USB drive reconnects, ZFS magically updates the mirror and I have an incredibly fast backup. If I want to use backups for going back in time, ZFS snapshots are perfect and fast.???????????VPS?????ISO????????????????????Oracle Linux???????????? Solaris ?????????? 

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• help me with my wine, it doesn't work proper

  - by Sebastian Raun Mikkelsen

  When i try to run something with wine, nothing happens! i have many problems with ubuntu so i have tried to get windows 8 back on the computer, but because ubuntu cant run exe files i cant open the installer. evenmore my computer cant boot from a CD/DVD anymore after i installed ubuntu, i turns op with a black screen with a blinking marker at the upper left corner of the screen and after 10 minutes it says something like " cant boot from the selected mediadevice - select another" so how to get windows back?

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• What is hiberfil.sys and How Do I Delete It?

  - by The Geek

  You’re no doubt reading this article because there’s a gigantic hiberfil.sys file sitting in the root of your drive, and you want to get rid of it to free up some space… but you can’t! Luckily, you actually can delete it, and today we’ll show you how. The more memory you have in your PC, the bigger the file will be. So What is hiberfil.sys Anyway? Windows has two power management modes that you can choose from: one is Sleep Mode, which keeps the PC running in a low power state so you can almost instantly get back to what you were working on. The other is Hibernate mode, which completely writes the memory out to the hard drive, and then powers the PC down entirely, so you can even take the battery out, put it back in, start back up, and be right back where you were. Hibernate mode uses the hiberfil.sys file to store the the current state (memory) of the PC, and since it’s managed by Windows, you can’t delete the file. So if you never use it, and want to disable Hibernate mode, keep reading. Personally I stick with Sleep Mode the vast majority of the time, but I do use Hibernate quite often. Disable Hibernate (and Delete hiberfil.sys) in Windows 7 or Vista You’ll need to open an administrator mode command prompt by right-clicking on the command prompt in the start menu, and then choosing Run as Administrator. Once you’re there, type in the following command: powercfg -h off You should immediately notice that the Hibernate option is gone from the Shut down menu. You’ll also notice that the file is magically gone! For more about dealing with Hibernate like setting how long it takes to head into Hibernate mode, you can check out our article on How to Manage Hibernate Mode in Windows 7. Disabling Hibernate Mode in Windows XP It’s a lot easier in Windows XP to get rid of Hibernate mode… in fact, we’ve already covered it before, but we’ll cover it again. Just head into Control Panel –> Power Options, and then find the Hibernate tab. Uncheck the box, reboot your PC, and then you can delete the hiberfil.sys file. Similar Articles Productive Geek Tips How to Delete a System File in Windows 7 or VistaDisable Delete Confirmation Dialog in Windows 7 or VistaClear IE7 Browsing History From the Command LineHide, Delete, or Destroy the Recycle Bin Icon in Windows 7 or VistaClear the Auto-Complete Email Address Cache in Outlook TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Whoa ! Use Printflush to Solve Printing Problems Icelandic Volcano Webcams Open Multiple Links At One Go NachoFoto Searches Images in Real-time Office 2010 Product Guides

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• SEO - How to Optimise For Long-Tail Queries

  There is a great deal of value in the long-tail of search. The long-tail is basically a query that is over three or four keywords long. Good examples of long-tail queries include "cheap flights to Japan May" or "buy back doors UK." Both of these terms exhibit a great deal of user intent - this means the users behind both terms are very far down the buying cycle and are looking for a website on which they can transact and buy a flight to Japan or purchase a back door.

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• Are SSL Certificates Really Secure

  The biggest challenge for internet these days is in the form of fraud or hacking. Security of any transaction on the WWW is very crucial and therefore, several security tools are developed for the sa... [Author: Jack Melde - Computers and Internet - May 01, 2010]

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• After Java un installation my system settings were vanished.

  - by Paul

  After my Java un installation, my system settings were gone. When I click on my system settings, I am not getting anything. For a long back I re-install my Java, so i don't remember which command I used to un-install my Java. Now I am not able to see my date and time settings and my shared folders are also not in sharing. Can anybody tell to me what gone wrong in my Java un-installation and how can I get back them.

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• Hangs up on install "Who are you" -- Dell Inspiron 1150 [closed]

  - by Writer595

  Possible Duplicate: Installer gets stuck with a grayed out forward button. I'm installing to a Dell Inspiron 1150 from a CD. I get to the window labeled "Who are you?," and enter info into all the fields. The prompt at the bottom says "Ready when you are..." The BACK button is available, but the FORWARD button is grayed out. I tried going BACK, and I tried reentering the info, and I tried restarting the install, but I can't get it past this screen.

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• Planning Your Website Content For a Powerful Internal Linking Structure

  Your website content is the key to getting your visitors to do something useful, like convincing them to buy one of your products, opt-in to your email list, or read another page on your website. One of the least useful actions a visitor can take on your site is to hit the back button and go back to what they were doing.

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• Why Do You Need SSL Certificate

  SSL (Secure Sockets Layer) is an encrypting modus operandi that ensures the en route security of the personal details processed by the browser to the server. We all know that online shopping is prefe... [Author: Jack Melde - Computers and Internet - May 01, 2010]

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• Do Small Companies Also Need An SSL Certificate

  The internet has enabled even the small companies to compete with the large companies, but the small companies need offer some of the best online services to their customers. Online shopping is picki... [Author: Jack Melde - Computers and Internet - May 01, 2010]

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• help me with my wine, it doesn't work properly

  - by Sebastian Raun Mikkelsen

  When I try to run something with wine, nothing happens! I have many had problems with Ubuntu so I have tried to get Windows 8 back on the computer, but because Ubuntu can't run exe files I can't open the installer. Furthermore my computer can't boot from a CD/DVD anymore after I installed Ubuntu, it turns up with a black screen with a blinking marker at the upper left corner of the screen and after 10 minutes it says something like Can't boot from the selected media device - select another How do I get Windows back?

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• Discover the Secrets to Obtaining Website Backlinks

  You could be wondering how effective websites or web pages would be without back-links and SEO. You are correct in your assumption that websites without back-links and the Search Engine Optimizations (SEO) are not worth their name. This article provides valuable backlink information.

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• SEOmoz Linkscape - Use and Review

  The inbound links play an important role to gain success in search engines. To rank top in the search engines you need to gain large number of good and top quality back links to the site. More the number of links more will the page rank and thus stand higher in the search engine ranking. So there is a tool through which we can increase the back links to the site called SEOmoz Linkscape.

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• Apple : bientôt des casques utilisant le port Lightening sur les iDevices ? Cupertino a ajouté des spécificités à son programme MFI

  Apple : bientôt des casques utilisant le port Lightening sur les iDevices ? Cupertino a ajouté des spécificités à son programme MFIQuelques temps seulement après la confirmation du rachat de la société Beats Electronics par Apple le 28 mai dernier pour un montant de 3 milliards de dollars, Apple prévoit déjà de revoir la façon dont les casques et écouteurs seront branchés à ses appareils. Notons que jusqu'à présent, sur mobile, les casques audio se connectent soit via un port jack 3.5, soit...

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• Downgrading Ubuntu 13.10 [duplicate]

  - by empec

  This question already has an answer here: How to roll back Ubuntu to a previous version? 9 answers I'd like to downgrade from Ubuntu 13.10 back to an older version. i.e. 13.04. Can I just boot ubuntu installer, uninstall Ubuntu 13.10 and install 13.04 without any problems to my home folder?

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• Cannot access Windows via grub after new dual-boot Ubuntu install

  - by user287474

  I previously installed Ubuntu on a computer that had Windows XP on it and got it successfully to run alongside it. (access both OS systems) Now I installed Ubuntu again on my MSI notebook with Windows 8.1, and I cannot access the GRUB without hitting escape on startup, and even then, I can no longer open windows. Before all of this, I created a recovery point, file history and saved a back up on a external hard drive incase I did anything wrong. Now how can I revert my computer back to it's state before installation.

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• Loose component cables causing HDMI video problems

  - by jwir3

  I'm not sure this is the correct forum, but I'll ask anyway. I have an A/V setup at home that has something like the following: Five Components (actually a few more, like a CD player, but they don't really relate to this question): Older Pioneer Receiver Digital Set Top Box Sony BluRay Player Samsung Plasma TV Speakers The reason for the receiver is so that all the sound can go through the speakers, rather than some going to the TV speakers and some to the external speakers. They are connected as follows: Digital Set Top Box connects via component video to Samsung TV directly via Component 2 (audio goes to Older Pioneer Receiver). Sony BluRay player is connected via HDMI 1 to TV, but audio goes to the receiver. Now, the problem I'm having is that when I have the digital set top box connected, there are times when the Netflix or Hulu streams I watch through the Sony BluRay player (it's connected to a router for internet access) will lose video. What I mean by this is that the sound of the episode will keep playing, but the screen will go black. If I jiggle the component cables, it will often come back. If I disconnect the component cables, it will always come back. I've noticed that one of the connections (the red component cable) doesn't like to sit very well in the component socket in the back of the digital set top box. It seems like there is a bad connection here, but it doesn't seem like this should be affecting the HDMI input at all. What I've noticed, though, is that when I disconnect the digital set top box completely (i.e. remove the component cable from the back of the TV), the problem seems to resolve itself. I'm not talking about actually removing the cable physically, because I thought perhaps the cables were mashing against one another, and possibly jiggling each other loose. To correct this possible problem, I took the component cable completely out of the cable ties it was in in the back of my entertainment center, as well as pulled the digital set top box out from the entertainment center altogether. It's now connected directly to the TV, without any other cables touching it to cause some kind of weird interference or just physical pulling on the cable. Same problem. If, however, I disconnect the component cable and just leave it sitting behind the TV, then the problem goes away. So, my question is this - what could be causing this? Is it a case where it's an improperly shielded component cable that's causing interference with the HDMI input, or something that's wrong with the TV? It's an intermittent problem, so it's difficult to track down. The TV isn't that old, so it's probably still under warranty. I'm just wondering if there is something else I can do that might reduce this problem without having to haul a massive television set out of my house to get repaired/replaced.

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• Is the master database backup crucial for restoring MS SQL server in the event where you have to res

  - by Imagineer

  I have been advise by Commvault partner support to turn off the backup of the master database as the backup failed due to the log file being lock. The following is the advise given: "The message is caused by Commvault’s inability to backup the master database’s transaction log. If this is happening intermittently its possible that something is locking the transaction log, preventing SQL iData agent from accessing the log. Typically the master database is just a template and is not used by any applications (applications that do require the use of an SQL database create their own) so there should be no harm in preventing it from being backed up You can do this by nominating NOT to back it up in the primary copy for the SQL data agent" The following is the error that I get. sqlxx SQL Server/ SQLxx N/A/ System DBs 19856* (CWE) Transaction Log N/A 01/08/2010 19:00:16 (01/08/2010 19:00:18 ) 01/08/2010 19:03:15 (01/08/2010 19:03:14 ) 1.44 MB 0:01:11 0.071 2 0 1 ITD014L2 Failure Reason: • ERROR CODE [30:325]: Error encountered during backup. Error: [ERROR: [Microsoft][ODBC SQL Server Driver][SQL Server]Cannot back up the log of the master database. Use BACKUP DATABASE instead. [Microsoft][ODBC SQL Server Driver][SQL Server]BACKUP LOG is terminating abnormally.] Job Options:Create new index, Start new media, Backup all subclients, Truncation Log, Follow mount points , Backup files protected by system file protection , Stop DHCP service when backing up system state data, Stop WINS service when backing up system state data Associated Events: • 79714 [backupxx/JobManager] [01/08/2010 19:03:15 ]: Backup job [19856] completed. Client [sqlxx], Agent Type [SQL Server], Subclient [System DBs], Backup Level [Transaction Log], Objects [2], Failed [1], Duration [00:02:59], Total Size [1.44 MB], Media or Mount Path Used [ITD014L2]. • 79712 [sqlxx/SQLiDA] [01/08/2010 19:01:53 ]: Error encountered during backup. Error: [ERROR: [Microsoft][ODBC SQL Server Driver][SQL Server]Cannot back up the log of the master database. Use BACKUP DATABASE instead. [Microsoft][ODBC SQL Server Driver][SQL Server]BACKUP LOG is terminating abnormally.] • 79711 [sqlxx/SQLiDA] [01/08/2010 19:01:51 ]: Query Result [[Microsoft][ODBC SQL Server Driver][SQL Server]Cannot back up the log of the master database. Use BACKUP DATABASE instead. [Microsoft][ODBC SQL Server Driver][SQL Server]BACKUP LOG is terminating abnormally.]. • 79707 [backupxx/JobManager] [01/08/2010 19:00:15 ]: New backup request received for Client [sqlxx], iDataAgent [SQL Server], Instance [SQLxx], Subclient [System DBs], Backup Level [Transaction Log]. Files failed to back up: • Backup Database[master] Failed Please advise, thank you.

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• HAProxy + Percona XtraDB Cluster

  - by rottmanj

  I am attempting to setup HAproxy in conjunction with Percona XtraDB Cluster on a series of 3 EC2 instances. I have found a few tutorials online dealing with this specific issue, but I am a bit stuck. Both the Percona servers and the HAproxy servers are running ubuntu 12.04. The HAProxy version is 1.4.18, When I start HAProxy I get the following error: Server pxc-back/db01 is DOWN, reason: Socket error, check duration: 2ms. I am not really sure what the issue could be. I have verified the following: EC2 security groups ports are open Poured over my config files looking for issues. I currently do not see any. Ensured that xinetd was installed Ensured that I am using the correct ip address of the mysql server. Any help with this is greatly appreciated. Here are my current config Load Balancer /etc/haproxy/haproxy.cfg global log 127.0.0.1 local0 log 127.0.0.1 local1 notice maxconn 4096 user haproxy group haproxy debug #quiet daemon defaults log global mode http option tcplog option dontlognull retries 3 option redispatch maxconn 2000 contimeout 5000 clitimeout 50000 srvtimeout 50000 frontend pxc-front bind 0.0.0.0:3307 mode tcp default_backend pxc-back frontend stats-front bind 0.0.0.0:22002 mode http default_backend stats-back backend pxc-back mode tcp balance leastconn option httpchk server db01 10.86.154.105:3306 check port 9200 inter 12000 rise 3 fall 3 backend stats-back mode http balance roundrobin stats uri /haproxy/stats MySql Server /etc/xinetd.d/mysqlchk # default: on # description: mysqlchk service mysqlchk { # this is a config for xinetd, place it in /etc/xinetd.d/ disable = no flags = REUSE socket_type = stream port = 9200 wait = no user = nobody server = /usr/bin/clustercheck log_on_failure += USERID #only_from = 0.0.0.0/0 # recommended to put the IPs that need # to connect exclusively (security purposes) per_source = UNLIMITED } MySql Server /etc/services Added the line mysqlchk 9200/tcp # mysqlchk MySql Server /usr/bin/clustercheck # GNU nano 2.2.6 File: /usr/bin/clustercheck #!/bin/bash # # Script to make a proxy (ie HAProxy) capable of monitoring Percona XtraDB Cluster nodes properly # # Author: Olaf van Zandwijk <[email protected]> # Documentation and download: https://github.com/olafz/percona-clustercheck # # Based on the original script from Unai Rodriguez # MYSQL_USERNAME="testuser" MYSQL_PASSWORD="" ERR_FILE="/dev/null" AVAILABLE_WHEN_DONOR=0 # # Perform the query to check the wsrep_local_state # WSREP_STATUS=`mysql --user=${MYSQL_USERNAME} --password=${MYSQL_PASSWORD} -e "SHOW STATUS LIKE 'wsrep_local_state';" 2>${ERR_FILE} | awk '{if (NR!=1){print $2}}' 2>${ERR_FILE}` if [[ "${WSREP_STATUS}" == "4" ]] || [[ "${WSREP_STATUS}" == "2" && ${AVAILABLE_WHEN_DONOR} == 1 ]] then # Percona XtraDB Cluster node local state is 'Synced' => return HTTP 200 /bin/echo -en "HTTP/1.1 200 OK\r\n" /bin/echo -en "Content-Type: text/plain\r\n" /bin/echo -en "\r\n" /bin/echo -en "Percona XtraDB Cluster Node is synced.\r\n" /bin/echo -en "\r\n" else # Percona XtraDB Cluster node local state is not 'Synced' => return HTTP 503 /bin/echo -en "HTTP/1.1 503 Service Unavailable\r\n" /bin/echo -en "Content-Type: text/plain\r\n" /bin/echo -en "\r\n" /bin/echo -en "Percona XtraDB Cluster Node is not synced.\r\n" /bin/echo -en "\r\n" fi

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• Easy Install Resets Hardware Settings

  - by bob5972

  I think there's a problem with the Easy Install setup. I selected "Installer disc image," and it came up and said that it would use "Easy Install," I think I hit next, and then I went back changed my mind, and selected "I will install the operating system later." After finishing the wizard, I think it still went and ran Easy Install, because it auto-installed VMware tools and I never got to select anything for my windows setup. Then, when it was finished, all the hardware changes I had made were lost. The RAM was changed from 2 GB back to the default of 1 GB, my CD ROM drive was set back to "Use a Physical Drive" and "Connect at Power On", and the Floppy Drive was also set to "Connect at Power On", after I disabled them. I was trying to install Windows 7, and I wasn't sure if I could change the RAM settings after installation without needing to reactivate it, so I deleted the VM and tried to start over. This time, the "Installer disc image" had my Win7 image pre-selected, so I clicked "I will install it myself later," set my hardware again, and tried to boot off my CD. Again,it did an Easy Install, and reset my RAM and my drive settings. So I deleted it again and the third time it still had the Win7 image pre-selected, but this time I unplugged all the drives and let it try to boot off the empty harddrive and fail, and made sure it kept all my hardware settings. Then, I powered it off, put my Win7 image in the guest CD ROM, and powered it on. This time it finally let me run the installer and pick my language, and type a user name. This time when I powered it off it kept my hardware settings. I can duplicate the error by doing exactly the steps above. Creating a new VM, selecting my "Installer Image," hitting next, going back, selecting "I will Install it myself," and then finish the wizard, and customizing my hardware right before the end, setting the CD Rom drive to the same installer media, and setting "Connect on Power On." (If I start it without the CD ROM in the first time, it doesn't do it). When I power on, I'm not prompted for any install information (like language and user name), and when it runs the first timemy hardware choices are reset (like the RAM back to 1 GB). If it helps, I'm running VMware Workstation 7.0.1 build-227600 on Gentoo Linux

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