Okay, I'm stumped. :-)
For the past week or so, our network performance has been very slow. Specifically, applications continually "freeze" for a few seconds, and then suddenly kick back in and continue. We use roaming profiles in our environment, and based on my observations, it looks like everytime an app does something that accesses the roaming profile, things go weird.
So... I have no concrete evidence here, but I'm guessing the file server is the culprit. Problem is, I see no problems. It's a Windows Server 2008 R2 x64 machine with all appropriate updates and service packs. Nothing unusual is running on it. It basically serves no role other than being a file server. There's no errors in the Event Viewer to speak of.
Anyone have any suggestions on where to look? Or do you think I'm barking up the wrong tree with the profile/file server hypothesis for these issues?