hello

today i bought the nokia n900, turned in on, then installed some applications form this website... nothing more, and now, my phone restarts or rebootes (but not hole, its like just restart xserver @ normal linux) all the time wenn I am ready with a phonecall or look at the map or whatever... sometimes it doesn't happen for 1 hour, sometimes it happen 2 times during 5 minutes... i can not reproduce the error when i want...
it suxx really hard... please what can i do? i have uninstalled alle the software which i installed, but still the same

any ideas ? i looked for stuff like factory reset, like in symbian phones... but i found nothing.

i have maemo 5 version 1.2009.42.11