Macintosh: Fonts and System File Memory Allocation
Why doesn't deleting 600K of fonts make my system file allocate 600K less memory? When I look at "About this Macintosh" the system file has allocated only 100K less memory than before deleting the fonts.
The system usually loads fonts into memory when an application uses the fonts. So even though you removed 600K of fonts, the fonts you weren't using weren't loaded into memory and have no impact on memory allocated for the system file.