I have heard a lot of reports about bad RAM causing unstable systems running OS X. I have not had any success in determining which RAM type is to blame. I am looking to upgrade my sisters computer for X-Mas but am troubled by a few unanswered questions.... The question is besides Apple pre-installed RAM: -Should I stay away from certain brands? -Are there brands which are superior to others? -What do you reccomend? Thanks in advance. I will be upgrading an iMac 333 currently running OS 9 with 96 megs (1x 32MB, 1x64MB).