Rendering issues under OS X 10.8.2

[Sebastian Sturm]

Dear all,

sorry if this has already been covered, but I couldn't find any related 
postings or bug reports so far. Trying out 24.2.90 pretest, I noticed that my 
modeline doesn't cover the full window width anymore. Also, the font 
antialiasing has changed noticeably; text that was once well readable now looks 
thin and spindly, especially on dark backgrounds, as shown in this screenshot:
http://dl.dropbox.com/u/27469243/emacs-screenshot.png
The left window belongs to emacs 24.2 (stable), the right one to 24.2.90 
pretest. In case the new font rendering reflects an aesthetic choice made by 
the developers, is there any easy way to revert to the old rendering behavior?
best regards,
Sebastian