WD TV Live Hub very slow to display directory listing via Mac connection

I connect to my wd tv live hub through my mac.  I can always bring it up quickly, and get to the root directory. However attempting to navigate to a sub directory with no more than 20 movies in it, can take minutes to display.  I made sure I’m running the latest firmware. It’s an odd problem, because it doesn’t happen with all directories.  The unit is new, and there are less than 100 total movie files on the unit.

Be sure to have the WDTV connected to a Gigabit router to get the fastest transfer rate possible.