I'm relatively new to the world of Macs, and one of things I love about them is that you don't get the gradual degredation in performance that you do with Windows as it gets loaded up with adware, viruses, fragmentation etc etc, usually culminating in a yearly rebuild. Or so I thought...I've had my powerbook since November 2005, I've barely added any more software since the first week I had it, nor added any more fonts, plug-ins, widgets etc. yet it seems to be getting sluggish of late. Is there anything I can do maintenance-wise to spruce it up a bit? Perhaps it's just my imagination... Rev E G4 pb with 80gb drive and 1gb ram. thanks!