I have experienced this problem too, on a Kubuntu Edgy. The application that crashes the most leaving that message is firefox, but sometimes Kicker or Kwin or Konqueror crash too.
I have memtested the system for two hours with no errors. I am running the system with nvidia drivers. It happens with both the drivers at ubuntu's repositories or any driver downloaded from the nvidia website. -- Random crashes https://launchpad.net/bugs/70579 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs