Ok, I've noticed lately that if I leave my computer alone playing music (usually while I'm sleeping) that it runs really slow after I get up, so I checked iStat after a restart and came up with these readings
After about 7 hours of running itunes, mail, and Utorrent I got this
Can anybody explain why almost 3 of my 4 gigs of ram is inactive... it's really annoying me

After about 7 hours of running itunes, mail, and Utorrent I got this

Can anybody explain why almost 3 of my 4 gigs of ram is inactive... it's really annoying me