Currently Being ModeratedNov 28, 2012 12:03 AM (in response to siannyevans)
Hmm, if Using Safari, try Safari>Preferences?Advanced>Never use font smalr than...
Any change in Safari after restarting it?
Currently Being ModeratedNov 28, 2012 12:48 AM (in response to siannyevans)
Some Firefox and Safari extensions and add ons can cause conflict with font sizes.
In a process of elimination try switching off all extensions, then re-enabling them one by one until you find the culprit.