From the XP laptop I can't access the forums.
But from my iPhone on the same wireless LAN I can post this.
The win 7 laptop works, as does the XP desktop downstairs and the win 7 notebook.
It's only the Sony vaio that isn't working.

It's not a firefox issue, it also times out with IE so we can't blame Firefox 6.

I have flushed the DNS cache, rebooted, loaded latest windows updates (that might have been a mistake) and updated the antivirus.

Baffled, any ideas folks?