...that I didn't worry about running out of disk space till it got down to 1 or 2 megabytes of free space (of course, the drives were 10 to 20 megs total). Nowadays, I get nervous on my desktop when it falls under a gig.

Two gigs a day? You must be working on the Total Information Awareness initiative. Either that, or it's a pretty heavy imaging app - something along the lines of satellite feeding data into the system with a resolution of 0/2 inches. :-)