Ever since clean installing snow leopard on my MBP everything has been great, except for one very annoying problem. Every application launch is followed by a flurry of disk activity (despite having tons of ram free). Sometimes just at idle the disk starts reading something at high speed, and the noise it makes when it does this is very annoying, not to mention it slows things as well. I have provided a screen shot below, 20 minutes after boot (with just Safari used after) and the disk has read 1.74GB of data and written 403mb. As I'm typing this (and doing nothing else) it's working away madly and making a ton of noise. Sometimes the disk works continuously for over a minute, and I'm not doing anything! I have ~1GB of ram free (green). Anyone else have this problem? Any solutions? Explanations?