Been having this issue ever since first 6 betas but assumed that once RCs came around, this wouldn't happen. The problem is that incomplete or encrypted downloads back up until downloads completely stop. The cache readout drops to 0 which I assume has something to do with it. Restarting Newsbin briefly solves the problem and I see my full 50mb download speed for a few seconds until the cache starts dropping rapidly. As soon as it hits 0, all downloading stops and Newsbin is essenatially dead.
In the example below, I have opened the first RAR in the encrypted set and entered the password - unraring starts and completes successfully. I can do this with all complete downloads and then the problem is solved however this babysitting of the client is not required in v5 - it just sees the downloads as done but unextractable and carries on. Here is a screenshot of the current situation in case it helps:
I have already tried increasing the cache level in the .nbi file but even when set to 1000, all that happens is the cache takes a little longer to fill at which point everything still grinds to a halt. Any ideas? As I say, if I dump 6 and reinstall 5, the same download list continues through these problems without stalling.