For being so old, this is a pretty powerful machine (8GB RAM) and, regardless, it used to be much faster. The slowdown has been gradual - over a period of the 4 years I've been using it. So my guess is that it's the accumulation of some kind of soft junk. On PC's they'd recommend defragmenting the hard drive, and you'd get to throw out a few hours, watching some stupid graphic of red, blue and green globs line up from a random mess into a bunch of neat rows. But that never really improved anything and I think it was just a game Microsoft invented to keep users occupied a bit longer, instead of screaming and suing them, which is what they deserved. But getting back to this, it would be nice if there were some kind of real housekeeping that could be done to keep the system young and vital - something less drastic than reformatting the hard drive. Still only having to do it once every 5 years ain't bad. And, I suppose, I really should be saving up for a new machine. It's just that this one has been so insanely reliable. And I love how well made it is...