I was under the impression when it was originally announced last year (I'll try and find the source) that there was only going to be ~8 episodes of 8 minutes in length. So far I believe that there are at least 7 episodes and that the first two have only been about 5 minutes.
8 episodes at 5 minutes doesn't even give us the equivalent of 2 standard cartoon length shows. I think after watching the first I am going to do as Borgeman suggests and wait for them all to be released and watch them at once. I may be less harsh a critic then.
Edit: From Machinima's youtube page - "The full series will be 8 episodes..."