My scroll lock key will randomly blink periodically, but not always. I generally have the same programs open -- Word, Excel, Firefox, Thunderbird, a .wav player program, a text expander, etc. -- and I have not been able to narrow it down to coming from any particular program. When the scroll lock light is randomly blinking, though, it affects my text expander *and* it affects the spell check in MS Word (at the flash, it looks like it is making an edit to the spell check).
Does anybody have any ideas of where I could track down why this light is blinking and how to get it to stop?