I still love my iPhone, but I have found one area where it is really buggy…..installing and updating apps. I previously noted that when I tried to update more than one application at a time, the iPhone hiccuped. I have now noted consistent problems installing and updating applications. Often the iPhone seems overtaxed when installing or updating apps. If this happens, it freezes and is totally unresponsive.
My advice is this:
If your iPhone does freeze, you can reboot it by holding down the Sleep/Wake button on the top of the phone and pressing the Home button at the same time. Hold these two buttons down until the Apple logo appears, and the phone should be back to normal.
More information about this problem and resetting the iPhone can be found at iPhone Hacks.