Thanks to Macgasm for pointing out that Apple is now giving away free DVD copies of Mac OS X 10.6 Snow Leopard to MobileMe users still running on 10.5 Leopard. This is to aid those users in making the jump to 10.7 Lion (which must still be purchased from the Mac App Store for $29.99) and thus iCloud before MobileMe’s 30 June 2012 shutoff date. Of course, a copy of Snow Leopard won’t help those still using PowerPC-based Macs, which can’t upgrade past Leopard, but if you’ve simply been dragging your feet, this is a nice enticement to make the switch.follow link
Turn Off Filename Extension Warning
In Leopard, Apple fixed an annoying aspect of working with the Finder in Tiger. Previously, if you changed a file's extension, the Finder prompted for confirmation. But since no one has ever accidentally changed a filename extension, Apple thankfully added an option to turn that warning off in the Leopard Finder's preferences. Choose Finder > Preferences, and in the Advanced screen, deselect Show Warning Before Changing an Extension.
Free Copy of Snow Leopard for Leopard-Using MobileMe Holdouts