When it comes to the technical side of computers, I'm pretty uninformed about a lot of stuff (I still don't know what this whole "Permissions" thing is all about.. another time..). Anyways, my question is simple as I've seen it talked about many times before, all I ask is that the answer be presented in layman's terms so I can understand. I have a G4 iBook with a 60GB HD and with the standard 256MB of ram. It's not as though I'm getting consistantly frustrated with my machine, but I notice that when I try to actually use more than 3 programs at once that it starts to run slowly (eg: I start to hear the hard drive work overtime and the animated rainbow mouse icon seems to appear more often than the pointer icon). Furthermore, for no reason in particular, I opened up the "Activity Moniter" a bit ago and clicked on the tab that said "System Memory" which I assume refers to the RAM and it shows me that only 4.9MB is available while 43.99 is "Wired" (whatever that means), 141.82 is "Active," and 66.71 is "Inactive." To get to my point, the fact that there's only a really tiny percentage attatched to the word "free" kind of worries me and I was wondering if this is a sign that I should get some more RAM. I honestly have no clue if that'd be a good idea (my ex-boyfriend told me it would just be a waste of money) and would like an expert opinion (I'd even settle for a pseudo-expert opinion). If the answer is "yes, you should get more RAM!" then, out of curiosity, what would be a good number to shoot for? I don't do anything too intense on my machine, mostly just web-browsing (constantly tabbing), AIM, p2p (for legal purposes, I swear!), iTunes and a few games (the Sims) every now and then. I appreciate your time, thanks for reading. PS: If this should've been posted elsewhere, I apologize -- I just figured that since it related to both hardware and software I'd just plop it down somewhere.