Please leave this thread up because seveneth’s solution for solving the ARRAY bug saved me, too. It may not be a support problem, but it sure looks like a bunch of us needed support because of it.
After upgrading to WP 2.2.2 from 2.1, ARRAY errors were gunking up everything, including all of the themes in the control panel. I had used the Maintence Mode plugin suggested when I upgraded, but after I got everything installed, I could not get out of Maintence Mode. I had checked everything I possibly could think of – plugins, htaccess, etc – short of a reinstall when I came across seventh’s message about editing the wp-includes file:
/wp-includes/plugin.php [Line : 102], inside remove_filter function.
It worked! Immediately. I have no clue why, but I am very grateful. If you are at your wits’ end over this ARRAY thing, back up the original plugin.php and try it. Thanks so much, seveneth!