Yeah, what especially irks me with SourceForge is the common habit of projects regularly deleting all outdated releases (due to some per-project size limit? or just not to clutter up the list?). In old projects with messy releases, it can be very hard to piece together exactly which revisions went into a version "x.y.z" that everyone else depended on, except by actually looking into the released files. If those files don't get archived anywhere, they just get lost to the ether. (At least, short of a manhunt for anyone with the files in an ancient backup at the bottom of the sea.)