Okay, now who thought serif fonts at 9px are a good idea for on-screen reading?
I have to squint to see anything in the first place, and the font smoothing (which is dear and near to my heart, thank you) turns the serifs into a smeary blob of pixels at such sizes.
Please, people. Serif fonts should only be set at large sizes in on-screen media. Anything small should be sans-serif, in a very plain type, like Verdana, or maybe Arial (which, mediocre as it may be, is excellently readable at tiny sizes down to 7px), or even Tahoma (yuck).
These are the most basic rules of on-screen typography.