WMC and Netflix with many episodes

Netflix (for the most part) is working fine on my WMC7 machine.  However, it seems to choke on TV series with many episodes.  E.g. try to play any of the last 10 episodes on Phineas and Ferb.  I get an application error:

There is a problem with the application at this time.  Try again later.

Is it just me or can anyone else confirm the same problem on your machine?  Thx!

Wayne