Nevermind! Found the blacklist options under Performance > Page Cache and then scroll down near the bottom.
turns out my WP installation was hacked– did another google search and this time I found something.
http://wordpress.org/support/topic/141041?replies=27
yay, google for helping me
boo, wordpress support for being MIA 🙁
hmm I’m at a loss. the wp_options db table is quite a beast, and I’m not sure what it should be, but I don’t think it’s actually a problem in the database table (since the db is identical on both boxes and everything works perfectly on the old server).
so, I blame some kind of config issue on the new server. any ideas where I should look?
hmm the issue seems to do with get_option(‘active_plugins’) returning that crazyness as an entry… still tracking it down