Ok...so I have 1.5.8 ,1.5.8OB and 2.2open alpha installed on one SSD drive. One of the 1.5.8 installs has to come off before I can install 2.5. I need to keep the OA version for at least a couple of weeks before I can nuke it. I have no use for either version of 1.5.8. So which one should I uninstall before the 2.5 upgrade. Remember one of them has to come off to make space.