@ Jesus
You don't have Alt.Binz?
Edit: Well, I tried the Teil 3 example given by the OP, and it downloaded an unrared fine here when the subject wasn't used as the NZB name (with dl folder named after NZB). When it was, decoding failed, CPU and memory went wobbly, and my log was swamped with error messages:
[Dec] Exception Cannot create file "". The filename or extension is too longAlt.Binz could deal with such situations more gracefully, but the general solution is simple: use short/safe NZB names, and always read your Log before posting bug reports here.