The average iOS user coming to the Mac for the first time will probably love the new iCal and Address Book – those who have been on OS X for years and care ... a new file sharing functionality in Lion ...

You can even change the background of your Launchpad wallpaper thanks to OS X Daily, whom ask that you prepare a PNG (hopefully one that tiles nicely) before walking through the five required steps.

Here are some of the pitfalls that might await unsuspecting service technicians as they attempt to move to Mac OS X 10.8, aka Mountain Lion. For machines that already have Mac OS X Lion ...