i'm also now getting this problem on a 13.04 system since todays updates which included some qt libraries...
Cannot mix incompatible Qt library (version 0x40804) with this library (version 0x40803) Aborted (core dumped) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1166102 Title: Cannot mix incompatible Qt library To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qt4-x11/+bug/1166102/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs