nst.tmp error message

Hi,
I'm new to this forum, think I've manged to create a new thread in order to answer a query about my PC.

In the last few days I keep getting an error message when I'm on the internet.
Always comes up as a nst.tmp error.
I can either send an error report or debug. I've done both. PC appears to work OK all of the time, but the error message can become irritating as they come up at various times during my session.


Any help as to what they are and how to get rid would be much appreciated.
Thanks,
Tim