It seems that for the last week, or two, that the mentioned website has gained the added feature of pretty consistently crashing the nightly WebKit builds. The normal Safari (3.2) renders the site just fine, so it must be some sort of regression of the WebKit builds. Crash log.
Created attachment 25416 [details] Example of holecomics crashing the webkit build
<rdar://problem/6396330>
*** This bug has been marked as a duplicate of 22073 ***