I had been fretting recently about the Shift+Alt+Delete keystroke not working on the Blackberry Bold 9000.
For those who don't know about this keystroke, it's essentially the same as removing the battery (ie: a hard reset) but without the hard work associated with it. The blackberry device is very particular about hard resets - and there's often a reason why you need to do one instead of a soft reset (which is just turning the device off and then on again).
In any case, the keys still work but now only the right shift key can be used. I've also heard some users complain that they have to do the key combination twice before it takes effect.