Here's the deal... I have a QNAP TS-209 Pro, a NAS drive that's a bit of a swiss army knife that can handle WINS, AppleTalk, NFS, Bonjour etc. It's a relatively fast unit with gigabit ethernet, I get about 11-12 MB/s without using Jumbo frames and I'm OK with that. When I access it via Windows (in Boot Camp on my MBP) it's always lightning fast via both WiFi and, obviously, ethernet. Browsing it is instantaneous like it was a local drive. If I double-click on a folder, the Explorer window is filled with content in a matter of milliseconds. You won't know it from a local drive until you start some big file transfer. But when I'm in OS X it's kind of slow. It's not an issue of network speed (I get rougly 160 Mbps with Airport in both Mac and Windows). The lagging manifests itself in different ways depending on protocol: If I use SMB, navigating the folders is relatively snappy. Not as quick as in Windows, but still. Except when I go into a folder with a large number of files, then I have to wait forever staring at an empty Finder window before the file list appears. And copying to and from the drive is horrible, if I drag some large folder to my desktop I can basically go out to lunch while OS X is "Preparing to copy NN,NNN files". Once this infernal file counting is over, however, the actual copying is as fast as on Windows. If I use AFP, navigating the folders is universally laggy. If I double-click on a folder with 10 subfolders, it takes about 3 seconds before I see them. It's kind of like browsing a remote FTP rather than a local NAS drive. On the other hand, the delay doesn't increase if there's a large number of files, like with SMB. It's the same 3-second delay no matter if there's one or a thousand files in the folder. Also, the "Preparing to copy..." part is much faster, it takes a coffee break but not an entire lunch like it does with SMB. Is there any way to, um, make it suck less by optimizing something somewhere? Basically I'd like the navigation snappiness of SMB but without the insane delays when there are many files in a folder, and without "Preparing to copy..." moving at snail pace.