I recently had a couple of new computers with Windows 7 (64 bit Professional) in an AD environment experience seriously slow browsing of network folders with JPEG files. Windows Explorer would slow to a crawl, often crashing outright. Googling the problem provides many, many supposed solutions, mostly centering around the network adapter properties (disabling remote Differential Compression, disabling Autotuning, disabling Flow Control, etc), none of which worked.
As of this writing, disabling SMB2 (and SMB3) on the client side seems to have worked (speaking to the former admin this was already disabled on the Win2K8 server).
