>a. you're running a wireless network or
I am, but the receiver and server are hardwired through ethernet.
>b. you have the same ip address assigned to more than 1 receiver or
Only one receiver currently connected.
>c. your server machine spec is quite old (p166 or the likes)
Server is a PII-400, it's only job in life is to serve the receiver.

I'll PM you with my email address later, I'm at work right now. I'm also doing some major re-wiring of my network so may not be able test right away. (BTW the problem started before I started re-wiring )

Also this is a re-badged DELL, FWIW.