I just re-installed all the libc6 packages and the bug is gone. As I said, I think what happened to my system during the upgrade process might have caused this. When I saw your comment about the bug being deeper than X I decided to re-install the libc6 packages and the bug is now gone. I'm sorry about the confusion. I think this bug can be closed.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/971767 Title: Xorg crashed with SIGSEGV in __GI___libc_malloc() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/971767/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp