I'm using Windows and the rars I download are typically 150-400 MB. The old program I'm using, Xnews, decodes and appends those files on the fly, SABnzbd+ does not, it uses memory or disk cache. I remarked to the developer 7 months ago that compared to Xnews and others SABnzbd+ is disk inefficient, he agreed, and opened new enhancement request ticket #226. I like a lot of things about SABnzbd+ but my copy gathers dust unused because I don't like its disk inefficiency on a Windows platform.