I have the same error. This sometimes happens when I have two fingers just touching the touchpad.
Linux slim 3.13.0-46-generic #77-Ubuntu SMP Mon Mar 2 18:23:39 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux Ubuntu 14.04 || MacBookAir6,2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1264795 Title: Alt+Tab Switcher randomly activates itself To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1264795/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs