Hey guys, Today whilst surfing the net via wireless (only for a few mins) my Desire shutdown out of the blue and now constantly reboots - all it shows is the O2 Welcome screen before rebooting. Tried stopping this booting by holding down the power key and now it's stuck on the welcome screen! Any idea of what I can do? I've already removed the battery, sim and mini sd card and tried starting again but I still can't get past the o2 screen! :S Help!