"To anyone getting 'An internal error occurred.' (3200) while installing iOS 5.0, Apple's servers are swamped, and failing half the requests," iOS developer and jailbreaker Jay Freeman, aka Saurik, said in a Tweet. Other users reported receiving errors codes of 5000. Many users reported their updates eventually succeeded, sometimes after as many as 10 failed attempts.
The Register: iOS update woes prompt gnashing of teeth for Apple fans