Two spontaneous soft reboots yesterday. One while I wasn't recording anything and the other while recording two programs and watching one of the recordings. I ended up missing 3-4 minutes of the Simpsons during the reboot.
I can't beleive these units were tested before release and that it has taken so long for an update to fix it. They should bundle and release the fixes they have ready instead of waiting for everything to be fixed and tested.