I am using ubuntu 10.04. Now the ubuntu is performing as i want. Is there any thing like system restore in ubuntu.
SO that if i upgrade the ubuntu softwares and it stops working and i can restore the system to previous state.
You could use SBackup for example, which is available by the package manager.
This page describes good alternatives to backup your system too, like using a versioned file system.
if you have good store then you can using remastersys you take running snapshot it will .iso format