Delicious Toolbar Icon Woes

Recently I’ve begun using the popular bookmarking service Delicious.  One of my favorite features of this service is that I can install the associated Firefox add-on, and this enables a handy bookmarks toolbar that stays synchronized between my home and work computers.  Recently, however, I’ve noticed a strange incompatibility with the theme I use in Firefox.  For some reason, while using the myFireFox theme, the icons placed in the favorites bar are sometimes improperly sized which makes for a relatively ugly experience: Notice the huge icon next to my link for my Doctor’s Office in...