I'm running Linux Mint 13 mate
Yesterday I noticed a strange problem, I opened VLC and it started spawing dozens of instances of it. I couldn't close them fast enough, so I logged out which fixed it temporarily.
Its not just VLC. I had an open Libre Office doc that on one line started adding spaces. Again, had to log out to stop it. Gmail was flashing as if I was clicking every icon on the page as fast as I could, but it wasn't me.
I'm using a wireless mouse and have Touchpad-Indicator installed to disable the touchpad, but I've been running that for several months.
The problem occurs when i have been logged on for several hours, not right away.
Any clues appreciated, thanks...