I could use some advice. I'm setting up a little 3-4 station peer to peer network using Windows XP Pro SP2. I have all the PCs (2 brand new Dell Vostro desktops and 2 Dell Vostro Laptops) connected to the network and they can all access the Internet just fine. We have a PIX firewall in between the network and the DSL internet router. Computer A has a program installed on it and I have the folder shared. The other computers can all access this at boot up. However, if Computers A and B are using the shared program and Computer C joins in, we start having issues. Probably within 5-10 minutes all computers lock up. While locked up, I tried pinging Computer A by IP and by name and got a reply instantly. I did notice that when I did a NET USE on Computer B or C it said "RECONNECTING" and then the share name. It never reconnects though, not without Computer A being rebooted. I might mention that when the shared program locks up, we can still access the Internet from all PCs.
I've been reading a lot of posts on this site, but I'm really not sure what to try first. Do you all think that it might have something to do with permissions? I am using Simple File Sharing. Any help would be greatly appreciated and will get whatever info needed to help me troubleshoot this.