I apologize for being so brief. I am not sure how to replicate it but it seems to be happening to different combinations of USB mouse and keyboards and even ps2 ones.
There are a lot of such people on the forums. -- Generic kernel bug https://launchpad.net/bugs/85782 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
