[jeff markham]

Hi,
This really sounds like StickyKeys got turned on .. basically,
if you hit a modifier twice closely together (in time), it will
stick it (like capslock .. but it works on control, shift and Alt.).

jeff

PS: here's how you turn it off:

1. Press SHIFT 5 times consecutively. The StickyKeys box will pop up.
2. Click Settings. Accessibility Options pops up.
3. On the "Keyboard" tab click the "Settings" button in the "StickyKeys" section.
4. Uncheck the items in this window and click OK.
5. Click Apply and OK on Accessibility Options.