So I just recently brought an old dell optiplex gx280 back from the dead with a fresh ubuntu 12.04 standard 32 bit install, but I have been having weird issues with the keyboard. I will be able to use the computer normally for a while, but then eventually normal letter and number keystrokes start being perceived as keyboard shortcuts (i.e. pressing w will show windows and pressing numbers will launch certain applications). The keyboard layout seems fine I just don't know why this keeps happening. I even tried going from the unity environment back to classic gnome and I still have a similar problem. Does anyone know how to rectify this? Thanks.