Hi, I have installed WP 3.1 in a subdirectory with the index in the root, and I can't seem to get the Admin Bar to appear. I have similar installations with the index.php in the subdirectory and it appears just fine.
Also tried switching to the Twentyten theme, and disabling all the plugins. The option is turned on in my profile (and in fact shows up just fine from the Dashboard, etc.)
The site is http://isaandcompany.com. I like the new Admin bar, I find it's quite handy. Any insight greatly appreciated! :)