Lately on quite a few of my downloads using build 4776 the download will progress along and suddenly lose most of it's files at various intervals, causing the download to cease at 99%. Some process is sweeping through the temp directory and removing everything at seemingly random intervals but since Newsbin believes the files are still there, the download stops at 99% and reports PAR: 0(xxx) pieces available, where (xxx) is always available PAR files that are never removed. If I restart Newsbin, the files are marked as duplicates and if I bypass filters sometimes they will complete, but mostly not. This only recently started happening in the last week or two as I've been using 6.72 since near-release.
Disabling AutoPAR has no effect. Files are still disappearing. No other files on my system are disappearing.
Earlier today I thwarted the deleting by moving files as they downloaded to the root of the temp directory from their temporary downloading subfolder.