Boot off and run from the Ubuntu CD (no need to install, just run it.) This is only a test I use to see if it's a hardware issue or not.
In closing, I won't duplicate web content about Ubuntu.
My HP Pavilion dv2715nr keyboard doublle strokes using certain characteers. Hit the E once, get two E's. Just then I got two periods when I hit the period in a light normal stroke..
I had the keyboard replaced, I changed the Vista Keyboard conntrol pannel keystroke rate and delay to slow. Nothing helps. BIOS have been updated.
Can anyone help? It never use to do this! Phill