Vista Ultimate OEM Update Error 0x800B0003

I am getting this error when running the upgrade client or the web client.

Machine has a static IP and all other network apps seem to be working
correctly.

Here is the log:
2007-02-08 11:18:34:592 924 e80 Agent *************
2007-02-08 11:18:34:592 924 e80 Agent ** START ** Agent: Finding updates
[CallerId = AutomaticUpdates]
2007-02-08 11:18:34:592 924 e80 Agent *********
2007-02-08 11:18:34:593 924 e80 Setup Checking for agent SelfUpdate
2007-02-08 11:18:34:593 924 e80 Setup Client version: Core: 6.0.6000.16386
Aux: 6.0.6000.16386
2007-02-08 11:18:35:907 924 e80 Setup WARNING: SelfUpdate check failed to
download package information, error = 0x800B0003
2007-02-08 11:18:35:907 924 e80 Setup FATAL: SelfUpdate check failed, err =
0x800B0003
2007-02-08 11:18:35:907 924 e80 Agent * WARNING: Skipping scan,
self-update check returned 0x800B0003
2007-02-08 11:18:35:907 924 e80 Agent * WARNING: Exit code = 0x800B0003
2007-02-08 11:18:35:907 924 e80 Agent *********
2007-02-08 11:18:35:907 924 e80 Agent ** END ** Agent: Finding updates
[CallerId = AutomaticUpdates]
2007-02-08 11:18:35:907 924 e80 Agent *************

Thanks in advance for any tips/pointers.

regards.