A plugin which folder was removed from the mod directory still shows up?

Seems to me that the database of your site might be damaged. Check the database for example with phpmyadmin. It should report if there are any tables corrupted and might be able to repair them.

oh, I missed the 'removed plugin' part.  Yeah that's odd.  Follow iionly's advice and check your db

Matt, no, I don't have adblock, unless it comes with the installation. This is a fresh install, so just the bare basics are there.

iionly, I checked with phpmyadmin and it didn't mention a thing about corrupted anything. In fact, a bluehost customer service rep. installed it for me (as I was having trouble with Elgg not showing up in my database- now it shows up with the new install).

Very weird. You guys are very sweet, I appreciate your work and concern. I wish I could give you more info to settle this problem.