I think the powersupply plug input on the back of my tibook is a little loose. when the powersupply is plugged in, and there is ANY pull downwards on the powercord, the green light goes off, or flickers on and off. if I pull up on the plug a lot, it stays on. i can almost bend it upwards and it is no longer loose (coming on and off). is it bad for the power light to come on and off a lot when i am moving the computer around on my lap and stuff. I really don't want to send the computer in to get fixed, I am working on a few projects right now and i need the machine. thanks!