Posting, editing, and loading the wp-admin/post.php is still painfully slow.
I commented out the PressIt and Page Preview parts of the post.php and WordPress is fast and furious once again.
That said, I do not like editing the core files of WordPress ever. I am uncomfortable with this solution, but I just couldn't take it any more.
A lot has been said, with and without additude, about the current speed on a busy blog, but as anything constructive been discussed that I overlooked?