Or, for a simpler answer... The SHA1 posted by Vanelle and other veteran members were collected over several years, extracted from untouched/unmodified files distributed by Microsoft on MSDN, official pages, etc that was once available on the web, OR dumped from original physical media (CD/DVD) to file with specific tools and verified by multiple sources and trusted members. The SHA1 you posted are not in his database, which means those files are incorrectly dumped and/or modified, and there is no way to know if they contain virus and/or damaged files inside. In my opinion, EVERY topic in this forum regarding "INFO FOR COLLECTORS" should have exactly that, a list or a link to a list of the known SHA1 and file sizes in the 1st topic, so anyone interested in that information is able to find it. Sharing said files is a completely different matter, each one is entitled to choose what they want to share or not share, and that's a discussion I don't want to get involved.