Yes, although it's not actually a problem with jQuery not loading
properly, but with the CSS extension. It was discussed on this list, in
fact:
http://www.gossamer-threads.com/lists/wiki/mediawiki/739786
http://www.gossamer-threads.com/lists/wiki/mediawiki/739807
In the future, please report the exact error message, because not
everyone has magic guessing powers like I do ;)
--
Bartosz Dziewoński