http://linuxtoday.com/ Today I noticed that firefox-1.0.4-4 x86_64 was rendering this above URL with strange font sizes. Different letters within words would be different sizes. http://people.redhat.com/wtogami/temp/firefox-fonts.png Screenshot
Are you able to reproduce with a fresh install? Linux Today looks fine on my fc4 i386 testbox. I used to suffer from this on my previous workstation running fc2 though... but have no idea of the cause.
I'm seeing it on x86_64 with -3.1 and -4. Any other x86_64 testers?
*** This bug has been marked as a duplicate of 150682 ***