This is a rather stupid question, and I know it's been asked and answered in one form or another hundreds of times (including in limited form in the Wiki here), but Google and the Search feature just aren't being my friends today. I've got a couple of old iMacs (revision D, and a first-gen slot-loader) that only have 256MB of RAM in them. My workplace is cheap, and they're being foisted on interns anyway, so even the paltry $40 to bump the RAM isn't going to happen. Still, I want to be nice to the poor saps stuck using them, and I wanted to know if there's anything I'm forgetting to turn off or remove to reduce the RAM (or background process) useage. Already turned off everything in the Sharing pane, no dock effects, flat-color background image (not sure this makes any difference, but just in case), no extras in the menu bar, FUS off... is there anything else I'm forgetting? And by the way, what does that iTunes helper dodad that launches at startup do, anyway?