We recently upgraded the bios on this laptop, as recommended by the Dell Support Center.  Oddly enough at that same time the power button began behaving strangely.  It works to turn the computer on, but does not initiate the shutdown when pressed (unless it's held in, and then it forces shutdown as it should).  Unless someone knows of an issue that could have caused this behavior, I'll assume it's just an odd coincidence and call support (it's still under warranty).   While I love Dell support in general those calls can become quite tedious :) so I wondered if it has happened to anyone else.

Thanks!

ken