It's a pain in the ass, as it only seems to last half an hour or so. Anyone have any idea what the problem may be? Putting it on a hard surface doesn't work, and I've done all necessary updating and it still happens. I've tried blowing out the air vent bits, although I'll get a proper air blowy thing when I get home from holiday. Just wondering, is there any other possible reason for this? I'm getting pretty concerned that this would start happening so suddenly.