I tried it again and the bug happened again (this is 100% reproducible) . I attach my Xorg.0.log after the hard-reboot.
** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/9963715/Xorg.0.log -- [gutsy] When clicking on tools > Image Viewer; the PC freezes https://bugs.launchpad.net/bugs/147269 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