Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_1 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5F136 Safari/525.20) Hi all, I have a 20" 2.66ghz iMac with 2gb ram. When I restart my computer and open up my programs: msn messenger, adobe cs3, mail, firefox, and cross over games + counter strike I have ~1gb memory in use. However, after a few hours memory usage goes up to 1.5gb and I quit everything except msn and firefox, but memory usage is still over 1gb. I'm not sure if I am reading activity monitor wrong because it has: free, active, inactive, used. I'm confused so if anybody could explain or advise me that would be really helpful. Thanks! Oh and I'm thinking of upping to 4gb by xmas.