Quade found a bug in AutoPAR processing where PAR chunks weren't getting counted right so there were cases where Newsbin might not process a downloaded RAR set when it should.
Also, there are now two new hidden options for AutoPAR processing. "Aggressive Mode" starts the repair and unrar process within 10 seconds of the last chunk downloading if there are enough par blocks. The other option allows you to have PAR files download all the time instead of remaining paused and only downloaded if needed. For clean installs, Aggresive Mode will be on and PARS will not be paused. Upgrades retain current settings. Details for changing the states of the options are in the text release notes delivered with Newsbin.
The download link is on the Newsbin Beta Page.