In the new v6 beta the "Purge to Display Age" doesn't seem to be working. Doesn't seem to matter if I select a single group or multiple groups. I know the storage format is new, so maybe this is something you need to look at.
Also, it's a minor complaint, but this version appears to have dropped the search capability in the download lists (downloading, failed, downloaded). That was pretty handy to selectively pause things that might be deep in the list somewhere or to find some failed files to force a download. Am I missing it somewhere?
BTW, I really like the new look, and the local search is incredibly fast! Great job!