In case you didn't know, Kazaa will make copies of the files you preview with theater in your temporary internet files folder. Normally, they don't show up and aren't accessable with explorer, and clearing your temporary internet files folder won't delete them. And with XP, even a search won't show them (unlike other Windows versions). However, there are two ways I've found to view and delete them in Win XP.
1. Login as a different user and go to Documents & Settings\(your username)\Local Settings\Temporary Internet Files\ and look through all the folders.
Or a quicker way:
2. When in your temporary internet files folder in explorer and logged in as you, just add '\Content.IE5' to what's in the address bar.
You can now see everything in the folder as it actually is. Doing a search from there will now show all the files. You can delete any other files that have been left behind as well as the files that Kazaa left from previewing with theater.
I cleaned out several hundred MB when I first realized this. Also keeps people from finding remains of all those bad movies you thought weren't porn, but were mislabled .