I am having the same problem. On Hardy on x86_64, using 2.6.22-14-generic (2.6.24 has problems with suspend on my machine). It only happens when flashplugin-nonfree is installed, but seems to happen randomly, not necessarily when I'm interacting with flash. X just restarts and I get a login page. My Xorg.0.log.old is attached. I didn't have this problem with Gutsy.
Backtrace: 0: /usr/bin/X(xf86SigHandler+0x6a) [0x48402a] 1: /lib/libc.so.6 [0x2b7bda1f7100] 2: /usr/lib/xorg/modules//libxaa.so [0x2b7bdd265c9c] 3: /usr/lib/xorg/modules//libxaa.so [0x2b7bdd265e96] 4: /usr/bin/X [0x527ea2] 5: /usr/bin/X [0x515c3f] 6: /usr/bin/X(Dispatch+0x2ef) [0x44eaaf] 7: /usr/bin/X(main+0x47d) [0x436b9d] 8: /lib/libc.so.6(__libc_start_main+0xf4) [0x2b7bda1e31c4] 9: /usr/bin/X(FontFileCompleteXLFD+0x279) [0x435ed9] ** Attachment added: "Xorg.0.log.old" http://launchpadlibrarian.net/16025326/Xorg.0.log.old -- [Hardy AMD64] xorg unrecoverable crash when closing a Firefox tab with Flash inside https://bugs.launchpad.net/bugs/241145 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs