Craigslist breakage
Trying to load images on Craigslist (specifically, the Boston 'Musical Instruments' or other for-sale sections) results in the text loading but any image references to 'images.craigslist.org' (which tend to be over http for some reason) will never load, causing the page to sit in an indefinitely loading state. This is on Ubuntu Linux 11.04 with Firefox 23.0, and was duplicated on Mac OS X 10.8.4 and Firefox 23.0 as well.
https-everywhere plugin version is 3.3.2 (can't seem to find that in the dropdown-lists, unfortunately)