If you're using battery and have the wireless connection on and you plug in AC power it locks up. Same if you're on AC with wireless active and you unplug it. Locks up, not as in some program doesn't work...locked up as in you can't even move the mouse until after a hard reboot. It's fine if the wirelss is off and apart from this problem it doens't even hicup at anything. Toshiba M40 (M45 in the states I think): Pentium-M 1.6 Intel 2200 wireless XP home wtf is going on? She's gonna take it back to best buy and they probably won't be much help apart from keeping her laptop for 60 days.