I've been having this ongoing frustration with the Email app in OS X.
(I'm using 10.2.5 on a PowerBook 2000 Firewire model with 512M RAM).
The program accesses the disk frequently, and I can't use any other
application. The Mac becomes useless and I have to go work on
something else (or the PC with Win2000). It frequently does:
"Writing changes to Disk"
(Quitting it is also slow).
Much twiddling of thumbs. Much disk thrashing heard. Wasted time.
I do have to throw out a lot of spam, so I'm sure this is part of ...