I have tried this a couple of times. I did a reset the last times, and it went away for an hour, now it's back.
Here is a clip:
http://soundcloud.com/peterc52/test-forkert
When I bend a higher note, for example on the 15th fret on the high e string it sounds weird!! And when i pick a note, for example the 15th fret on the high e string again, and then mute all the strings afterwards, there still a sound afterwards for a short while!
Very annoying! It only occurs on the higher notes!!