Did the site CSS just change the font used for discussion (not Main) post bodies? It looks bad here.

Edit: it only happens with some posts. Like these:

http://lesswrong.com/r/discussion/lw/dd0/hedonic_vs_preference_utilitarianism_in_the/ http://lesswrong.com/r/discussion/lw/dc4/call_for_volunteers_publishing_the_sequences/

But not these:

http://lesswrong.com/r/discussion/lw/ddh/aubrey_de_grey_has_responded_to_his_iama_now_with/ http://lesswrong.com/r/discussion/lw/dcy/the_fiction_genome_project/

Is it a perhaps a formatting change applied when posting?

Also, when I submit a new comment and then edit it, it now starts with an empty line.