I am finding exactly the same problem. Everything fine until I upgraded to Gutsy today. There is a little bit of (potentially) useful information in /var/log/Xorg.0.log:
Backtrace: 0: /usr/bin/X(xf86SigHandler+0x6d) [0x48670d] 1: /lib/libc.so.6 [0x2b0d5f2ab7d0] Fatal server error: Caught signal 11. Server aborting -- X session dies when xscreensaver runs https://bugs.launchpad.net/bugs/145881 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
