After updating NIS 2011 to 2012 on two Windows 7 computers on our peer to peer network, the network connection between the two (and any other PC on the network running NIS 2011 or NIS 2012 BETA) has slowed to a literal crawl. I'm talking about copying a file that ordinarily takes a few seconds now taking 4+ minutes! The different computers show up just fine in our file manager, but copying or moving a file between computers suddenty takes "forever" since installing NIS 2012 on two of the computers.
Our connection to the Internet appears to be unaffected. The networked printer appears to be unaffected.
When I ping the other two computers, I get the result: "Destination host unreachable" although 4 packets are sent and received with 0 lost. I can successfully ping the networked printer.
I've rebooted all computers; I've changed NIS 2012 to make all the computers "Full trust" and exclude them from IPS scanning - this makes no difference.
It would seem that NIS 2012 must be the culprit -- it's the only change I've made to any of the computers today.I am at a loss to figure out what it is with the NIS install that could have caused this dramatic slowdown that makes the network pretty much unusable -- putting us out of practically out of business.
Any ideas out there? Help!