Quick Look not loading bundles

I've gone and done something silly, and now I need to figure out how to undo what I've broken.

First a little background: I was going though my process tree in Activity Monitor, looking for whatever app was blocking a game I was running. Without thinking too much about it I shut-down Quicklook with no noticeable effect so I didn't think too much about it.

After I a reboot, I've discovered I have a bit of a problem though: It seems something about Quicklook cannot load it's bundles. If I click on a file (most often a media file like a JPEG, MOV, or AVI) OS/X tries to load the thumbnail in the final preview column (under column view) and the poor OS will all but stall out. Eventually after upwards of a minute OS/X grunts its way through and I'm left with red lettering where the thumbnail should be that reads something to the effect of "Can't load preview bundles". (**I'm on my Linux machine @ work. I'll update this with the exact wording later when I get home.) After the initial failure the OS won't stall again until after another reboot, but once the stall has happened there are no preview capabilities for anything anymore.

What I've been trying to figure out is how the Quicklook subsystem works and where to start troubleshooting this issue. It feels very much like a corrupted database kind of thing - with the long timeout and all - and that suggests maybe looking at Spotlight first. However, the error is complaining about not being able to load bundles - which seem to be more specifically related to Quicklook.

I'd appreciate any input with regards to either the Spotlight subsystem or the Quicklook subsystem, or even if you've seen this behaviour before and know of a fix.