I can confirm that disabling Desktop Icons caused this issue, and re- enabling it solved it instantly.
Ubuntu 14.04 - Updated as of 12/01/2016 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1276186 Title: System becomes unresponsive, ibus-ui-daemon takes ~150 % cpu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ibus/+bug/1276186/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs