Of course you can tweak a lot more, here are some options you can play with until you are sastisfied with the speeds. But be warned: Enabling/disabling some options could result in dropping transfer speeds for getting, but increasing speeds for writing - and vice versa.
All other settings should be left as given in this tutorial. "refresh = 1" fixes a bug newly created folders/files not visible within Finder (Mac OS Cheapest Newports Cigarettes Marlboro 100'S Online X). "dead time = 15" automatically closes connections after 15 minutes of inactivity. Good for memory-saving on the MyBook. "getwd cache = Yes" creates a Cigarettes Newport Online Cheap Marlboro 100 cache for files and directories, thus speeding up things a bit". "oplocks = No" could be a pain if you're storing and accessing database files like MS Access. Enable (set to "Yes") if you have any problems with that!