I think I know what the problem is, but I just need someone to confirm it for me. So, I installed 8GB of RAM about 2-3 weeks ago (total of 12GB RAM now), and it still runs slow. I couldn't figure out what it was, til I realized it was from way too much CPU usage. Yesterday, my iMac was running slow again, and I checked my iStat Pro widget, and this is what I saw: ^Using 70% of my CPU and in the Processes section, the PluginProcess was at 158%!! I couldn't figure out what Plugin Process is, until I landed on my Safari Preferences. Under the Security Tab, in the Web Content section, there are 4 options Checked. I unchecked one of them last night: Enable Plug-Ins. Is that what was slowing my computer down? Safari enabling plug ins was the problem? So, I unchecked that option last night, and as I'm using my computer, I haven't noticed it slowing down or anything. Someone did mention that it's from Safari and using Flash, and it's best for me to use a different Web Browser. Any thoughts on this, or on what you think the problem could be? Thanks in advance!