My home network consists of 3 pc's, all running XPPro. The Internet connection is via a broadband router.

Up til recently (date unsure but probably two days back) everything was normal, with each machine seeing the others, all machines connecting to the internet, file sharing OK etc etc.

Suddenly, the network has become screwed up.  Each machine still connects to the Internet and each machine can ping the other.

But in Network Places on each machine, there are NO computers visible at all, not even each computer's own files, so no file sharing is possible.

I've checked and double checked all settings, but everything seems to be normal.  I've turned off Zone Alarm Pro without effect.  Every drive is set for sharing.  I've tried with specified IP addresses (the way it was when it worked) and with Auto-detect. 

All I can put it down to is a virus, but if it is, it must be an undiscovered strain - my virus protection is Nod32 on two machines and AVG Pro on the third - they're fully up-to-date and report no bugs.

Ideas would be much appreciated.

Ian Porter
Computer Guys Inc.
Arrowtown
New Zealand
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