Please post the network information requested in this thread: http://mxoboards.station.sony.com/matrix/board/message?board.id=techsupport&message.id=37
The patch server is online, and available for patching. The problem seems to lie either on the connection between you and the patch server, a blocked port range, misconfigured router, or firewall somewhere along the way that is preventing access. This also ocurrs with an unrelaible proxy (which your ISP may be using without your knowledge).