I need to install 10 PC which has identical setup and hardware. So i was trying remastersys but its failing. How can i resolve this or use something else to achieve this?

Updating the remastersys.log
cat: /home/remastersys/remastersys/tmpusers: No such file or directory
Cleaning up the install icon from the user desktops
Removing the ubiquity frontend as it has been included and is not needed on the normal system
Calculating the installed filesystem size for the installer
Removing remastersys-firstboot from system startup
 Removing any system startup links for /etc/init.d/remastersys-firstboot ...
   /etc/rc0.d/K20remastersys-firstboot
   /etc/rc1.d/K20remastersys-firstboot
   /etc/rc2.d/S20remastersys-firstboot
   /etc/rc3.d/S20remastersys-firstboot
   /etc/rc4.d/S20remastersys-firstboot
   /etc/rc5.d/S20remastersys-firstboot
   /etc/rc6.d/K20remastersys-firstboot
Making disk compatible with Ubuntu Startup Disk Creator.
Creating md5sum.txt for the livecd/dvd
Creating /var/tmp/custom.iso in /home/remastersys/remastersys
The iso was not created. There was a problem. Exiting

Follow up:

1) I am unhappy that there is nothing exist for this to recover/backup 11.10

2) Anyway i have to do it

3) I did not used the popular Clonezilla because it does not offer me iso

4) I downloaded: http://clonezilla-sysresccd.hellug.gr/download.html

a) created a bootable CD from that ISO

b) booted and followed those steps

http://clonezilla-sysresccd.hellug.gr/restore.html

c) i got a iso file with everyhing on it including boot-loaders

5) then in another system i used my same CD to restore my image

Perfectly worked.