strange keyboard problem

---

I experienced something strange with my Qtek 9100 today. when i turned on my phone, all the keys including the call and the 'hang up'-button where backlighted. the keys did not respond as they should, and pressing the d-pad center would either open the start menu or initialize the screen calibration. if i opened the Notes app and created a new note, the note was filled with single letters like the L, the H or the Y. none of the keys seemed to be working when i pressed them.

i've experienced this once before, and the only thing in common is that i had my phone in a thight pocket for several hours. last thime i solved the problem by hibernate the unit and pressing all the keys, and turn it on again. this time it wasn't that easy, but i managed to get it working again at last.

but why is this happending?

PS: i've tried soft reset and taking out the battery, and that didn't help.

Please help me and my phone :P