FWIW, I have the following extensions installed: Adblock, Disconnect, DuckDuckGo, Flashblock, Ghostery, LastPass, RSS Live Links, SmoothGestures, SmoothGestures Plugin, Stylish, Text URL Linker, Webmail Adblocker, WOT, XMarks. (Sorry, I don’t have time to show links for all those ! 88)) I have looked through them and can’t find anything that would suddenly cause the comics at the above site to stop displaying. And I had them all for some time. The comics issue only started recently, and I don’t know how to track down the source of the problem. (Online searches revealed nothing.)
I just thought I’d ask here in case someone recognizes the problem and has any suggestion.
Try clicking the dragon’s eye icon in the upper left-hand corner of the browser and select Options. Click Under the Hood and de-select Do not allow websites to know where you came from (Suppress HTTP Referrer header) to see if that makes any difference.