So recently I have noticed that my computer seems to be a bit lacking in performance. Today I noticed while using Logic Express 8 that only one of the cores was being used. I was running some plugins, but not more than I have before when things were working fine, and it kept stopping with a system overload message. Determined to figure it out, I installed the processor preference pane from the developer tools and when I opened it up, it said that I have an "Intel Core 2 (Merom) Processor. It also says 32 bit in the title bar. I have thought that my model has a 64 bit Santa Rosa processor. Here are the details on my machine: MacBook Pro from Sept 07 (bought new low end model) Model number A1226 2.2 ghz prosessor GeForce 8600M GT gpu 128 mb Any help with this would be great. Thanks in advance. Just let me know if you need more information.