Server is not streaming files with a length of 2 Minutes

Hey Guys,

I have a problem on streaming my files with the FMS 4. There are several testfiles on my VOD-directory, most of them with a length about 2 minutes. Altough there are some with 12 minutes. So if i want to play all those files with the StrobeMediaPlayer, only the files with a 12 minutes length are working, on the others the player ist sayin "We are unable to connect to the content you´ve requested. We apologize for the inconveniece.".

I can´t find any option or notice where it says there is a minimum lenght to stream... so whats going wrong here?

Additional Infos:

FLV, MP4

H.264 + AAC

Thanks.