Many times when I am browsing the web, Snow Leopard will sit and load a site for 20 seconds or more, until it times out and says it cannot be displayed. If I refresh, it loads RIGHT away, every time. The issue is intermittent but happens from once every couple of days to a few times a day.

So the long and short of it is this:

• Aluminum MacBook (Non-Pro) 2.4GHz Core2Duo, 4GB DDR3
• I am using 10.6.6 but I have had this issue since 10.6.0
• It happens in Firefox, Chrome, and Safari
• I have flushed my DNS (using the command 'blablabla flush')
• I am using custom DNS servers which I hoped would fix it but it had no effect*
• I am running Apache currently but haven't been for most of the time
• I've reformatted multiple times, always experiencing the issue
• I am on Cox cable internet, with a Motorola Surfboard & a Belkin F6D4230-4 v1 (Pre?) N wireless router.
• I've put the router in G only & N only & G+N to no effect
• It seems to be domain dependant as I can sometimes load the Google cache right away, and sometimes other sites will load but Google will refuse
• My Powerbook G4 with Leopard, other Windows XP laptops, & my wired Win7 desktop do not suffer from the issue.

*I recently started using these to escape the awful Cox redirect page on timeouts

I'm almost positive the issue has happened on other networks but I can't recall a specific instance (I have a terrible memory). The problem is intermittent and fixable enough (I just have to wait until it times out and hit refresh one time) but incredibly annoying since I'm constantly reading documentation from a large variety of sites.

EDIT: To clarify, this happens with ALL sites, not only specific sites. I haven't been able to detect any pattern to the failures, but one day Google.com will refuse to load while reddit.com will, and the next day vice versa.

Keep in mind that waiting for a timeout and hitting refresh loads the page right away, every time. If I don't wait for the timeout, opening more links, hitting refresh, and clicking the link a billion times have no effect.

It seems to be domain neutral, affecting sites seemingly at random. It doesn't seem to have anything to do with connection inactivity either, because I will be SSHed into different servers, uploading files, browsing, downloading, etc, and it will just quit loading Jquery.com (for example) until I sit and wait for a timeout. /EDIT

This is my last resort. Please, someone, tell me what is happening.

Thank you.