As explained in comment above, at some point nautilus got 100%.Here's a top output showing the issue. Didn't think of attaching gdb... Next time will do.
** Attachment added: "top.log showing the CPU issue in nautilus (maybe related)" http://launchpadlibrarian.net/13888648/top.log -- mouse & keyboard became suddenly completely unresponsive https://bugs.launchpad.net/bugs/216927 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