No clue why - if someone has hacked the damn thing again this really will be the final straw.
EDIT so I literally just posted a help request at the efiction.org forums, went back to INAP, hit F5 and it was back. I *guess* my webhost was working on the server but I'm about to bawl them out for it.
So - for now - it seems to be okay again. (Just checking though - othercat, liz_marcs and naol - did any of you make a change anywhere on the site other than on the submissions lists?)