Just take a screenshot, save it to the desktop and start opening and closing it once and again. It happens randomly, so you should get it sooner or later.
I didn't see anything relevant in .xsession-errors, but I'm attaching it anyway, just in case. ** Attachment added: ".xsession-errors" http://launchpadlibrarian.net/25612947/.xsession-errors -- fist double-click does nothing, second opens eog but not image https://bugs.launchpad.net/bugs/362783 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs