Hi I have the same problem as lordfury007. After such a random reboot "sw_rst" is written in the file /proc/bootreason. I first thought that it is because of software I've installed over the Extras-Devel or Extras-Testing repo, but after flashing the phone I'm now still experiencing the same problem. The files mentioned by 9000 are both set to 0. So might there be any chance to fix this annoying problem or do I have to return my device to Nokia for repairing? Thanks in advance!