Hi, For reasons mentioned in another thread (slack Photoshop CS6 performance on Lion), and with Mountain Lion getting so many mixed reviews, AND repeatedly hearing that SnowLeopard is still one of the best choices for productivity: I'd like to downgrade from Lion to Snow Leopard. (Got the original SL retail disc). Does it have to be a clean install or is there a way of tricking the current (newer) system into a downgrade. (Whilst I'm not a Unix or IT expert, I know my way around Mac OS... system folders, library folders,...) How about Mail? I know Mail in Lion is a new version. Can I still migrate my current mail database from Lion to Snow Leopard? (even if it's only possible manually, i.e. moving the user/Library/Mail folder) Same for Safari Bookmarks? Thanks for your advice!