I installed memory clean from the APP store and it's showing me that Yosemite doesn't allocate RAM properly, which may be why increasing my Mini from 4Gb to 8Gb didn't yield any performance increase at all. Opening Safari with one webpage open reduced my total free RAM to 4.6Gb. After I closed Safari, memory clean still showed 4.6Gb RAM free. I also noticed Chrome and Firefox use more RAM than Safari. Anyone else noticing strange RAM issues with Yosemite? I am running the latest version with the latest upgrade.