Hi, I have just installed Lion preview II on a genuine iMac. Just added a partition, and directly installed on that new partition (without burning to DVD, just running installer out of Snow Leopard). Great new features in Lion. And one can easily choose what OS you like to start; just as with boot camp, by selecting start disk, or pressing Option key when booting to select OS). But, now when I start Snow Leopard most programs try to use fonts from the Lion partition. That wouldn't be annoying, but theres always a dialog where you have to grant permission to use font X,Y,Z,... By now my only (workaround) solution is to unmount the Lion partition. Well, sound like Snow Leopard sees that there is a higher version available, and programs try to use resources from this higher version. What can I do, to make SL run, as if there was no Lion installed beside? cheers PS: everyone who has the chance should give the Lion preview a try. Its new features are great.