EDIT: Seems like Chrome is actually the problem with all its RAM-hogging 'helpers' as Firefox is making everything run a little smoother - pretty zappy now actually. Chrome Canary didn't do sh-t either... how the hell does Chrome get its reputation for being the fastest browser, seriously? edit: HDD is only about 2 years old and seems to have no visible issues. Hey all, Recently installed a new 2GB RAM card alongside the original 512MB one and upgraded to Lion. Things seemed reasonably smooth at first, but now I'm back to raging at really f--king slow response speeds on basically all and any apps (read: every browser I've tried), even when Activity Monitor is telling me I have 250MB RAM free. Have tried pretty much everything Drive Genius has to offer, including defrag, repairing permissions, and slimming, and used to Checkmate to scan for bad sectors in HD... nothin' So what the heck is going on? Is it just that Lion isn't very compatible with my 2.0 Ghz processor or the Hitachi HDD I got in here? I guess I will only know if I downgrade to Snow Leopard again, but historically 10.6 has run slow on this machine when I had the 1GB RAM, so perhaps this machine is just getting old (8 years now). Any suggestions welcome! Already tried resetting PRAM and SMC but maybe I'll just do that again...sigh. Thank you. P.S. Is there a simple nooby way to downgrade OS without backing up all your system prefs\files? cheers!