I forgot and left the GZ files enabled in 6.50. That means your header downloads will collect up in the "processed" folder in the data folder. You might want to keep this folder cleared out till I disable it.
Newsbin downloads headers to "Import" now. Moves them the "Processing" while they're being imported and then they end up in the "Processed" folder. They should be getting deleted there but, aren't yet.
I'm using them to test the watch feature. I can add GZ files back to the "Import" folder, Newsbin will re-read them and feed them through the watch code.