Hello friends, My wife has a 4 year old Macbook (white) which originally came with OSX Snow Leopard and was upgrading every time until Mavericks. Now of course, the Macbook is absolutely slow, when even I tried erasing the disk, reinstalling like new, everything, not luck at all. I'd like to know if I can downgrade to Snow Leopard to speed up the Mac and restore all the files from the recent Time Machine backup via Mavericks...is that compatible? Please let me know how to restore if I lost the discs..I read somewhere the Internet Restore option? Thank you!