I use Wine for winbox.exe (over IP, mac doesn't seem to work, but works fine with interface bridging with XP under virtualbox - good enough for me) and have only one issue using it - I can't figure out a way to upload/download files from the unit. Neither drag&drop or copy&paste methods work. I realize this is a limitation of wine, but I'm sure it'd be possible to bring up a standard 'open' or 'save as' box like practically every other windows application uses.
The best workaround I've found otherwise is scp(ssh), and that requires keeping ssh enabled, which isn't really possible in some scenarios (16MB ram routerboards)...
Anyone found a better workaround for this?