The CoH Wiki and this site are now running under mod_rewrite URLs. It's quite a powerful feature in Apache but I don't think I've found a single example or guide which actually had a working example. As for trying to debug what's going wrong... well, I though JavaScript had poor debugging - but mod_rewrite doesn't seem to have any at all. There's supposedly a log file you can tell it to write to and a log level to set, but despite setting the level to the highest, I got nothing output to the file (though it was created).