PC: (Athlon XP 3000+, built ~March 2004):
Windows and programs hard drive: 30 GB (11.8 free)
personal hard drive: 200 GB (63.8 free)
PowerBook G4 (1GHz, August 2003):
60 GB (~30 free, and only because I reformatted a couple months ago .. was 800MB free before that)
Power Mac G4 (400MHz Sawtooth; received April 2005; originally available in 2001):
20 GB (~13 free, I don't use this computer much)
and various other older systems with either 300MB, 800MB, 4GB and 10GB hard drives that either lie dead or unused.