I have a Treo 600, which I've had for four years. Since yesterday, the following keys just stopped functioning: shift key, alt key, backspace, return/enter key, none of the keys on the number pad. This has NEVER happened in the four years (and 3 T600s) I've had.

Luckily, my Jot application allows me to write caps and numbers as well as delete -- but it's a drag???!!!!

Has anyone experienced this and how do I resolve???? PLEASE HELP. Thanks.