After getting the /etc/rc file re-edited (thanks to Jaguar overwriting my files) so that my swapfile was on my other hard drive (thanks to this hint), I noticed that the original /private/var/vm folder wasn't completely clean yet. It turns out that the "pre-heated" data for your apps is stored in that same folder. So, this is a pretty minor tweak if you've already got the swapfile moved over (this is later in the rc script, so you don't have to do much else):
##(Note that "Delta" is the name of my swap file partition.)
# pre-heat support for working set profiles
##
appprofiledir=/Volumes/Delta/private/var/vm/app_profile
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http://hints.macworld.com/article.php?story=20020913051913365