The width adjustment problem affecting Mozilla-based browsers, which caused the entry page to widen and break the formatting, apparently still lingered around even after the last fix. So I did a more thorough analysis of the problem with the problematic browser (i.e. Firefox) and found that it does not readjust the width back as specified in CSS just because the comments area did not have a width set. The problem was corrected (or worked around, since other browsers don't have any problem) by giving the comments area a fixed width.