Currently Being ModeratedApr 19, 2011 4:25 AM (in response to pablo2001jedi)
The following link highlights the error code as being an issue with the connection to the Apple Server: http://support.apple.com/kb/TS1275
The link also has troubleshooting steps which you can try, but it is most likely some security software on your computer blocking the connection.
The easiest quick fix would be to update on a known working PC & Network connection, however making sure any security software is correctly configured should also resolve the problem, you can find troubleshooting for this at the following link: http://support.apple.com/kb/TS3125
Hope this helps.