Got a tough question for you.... I just partitioned my HD and installed mountain lion. When I boot up into mountain lion and I spotlight for applications, apps show up from the old lion partition and seem to run fine. Is there any reason to re-install apps on mountain lion if I already have em on my old lion partition? I need to know because im getting real low on HD space and dont have much room to install the same applications twice on my computer. If anyone knows the answer let me know!! Thanks!!