Loading http://thegreatdark.livejournal.com/ , I just got a 500 Error and no errordoc to handle it. Instead got the typical Apache one in Times font. This can't be good.
When I reloaded, it worked after a minute. (Sat there trying to load, but a lot of times that's just my connection)
Still though, if there's an error out ther causing a plain vanilla 500 Error, someone might want to replace it with one of the nicer error messages about being too full or something.