I've noticed that sometimes some apps I'm using slow to a crawl when they're accessing anetworkover the LAN. The share is on a non-Windows NAS.The problem does not always happen, but when it does it seems to be related to having multiple apps access the network simultaneously. The apps aren't accessing the same folders in the shares, however. The symptoms of the slowdown are that Windows seems to think the app is not responding (it greys the app's window), but if I wait a bit it does respond. I did not see this behavior in Vista.I'm running x64, if it matters.

Sounds like a bottleneck. Do you have all the latest drivers?

Yep, I have all of the latest drivers. In most cases network access is fine, better than Vista performance even, but occassionally this problem happens. I haven't been able to repro it reliably.