Quick post. Came across this on Moxiegrrrl's site which made me sit up and think. Someone dismantling their Dell Laptop came across a little gismo that sits between the keyboard and the integrated ethernet board, - an ideal position to intercept keystrokes!
Do read the article. It may be nothing, but in this day and age, it might very well be something. The letter this guy has from the DOHS would indicate they know something about it!