My son's 1G iPhone has started misbehaving. Looks like the sleep/power button gets stuck down, which causes a reboot loop. Needless to say, he is not particularly enthusiastic about Dad taking his iPhone apart.
For now, I told him to not use the Sleep button...just allow the iPhone to power itself off.
Mr. Google was not particularly helpful. I did find a few people that have had this problem and fixed it by taking the iPhone apart.
I was thinking that it might be possible to use some alcohol on a swab or contact cleaner to free up the stuck button. I am seeing issues with the Home button also. Sigh.
I have ordered the official Apple Spudger Tool (Apple Part # 922-5065) in preparation for the inevitiable.