lucy24 - 5:39 am on Dec 21, 2011 (gmt 0)
6. Hmmmm. Not really sure what that means
Cross it off the list, then, unless someone else has made you a custom htaccess. I'm thinking of redirect bloopers-- but those are more likely to end up in infinite loops, with google reporting "could not reach page" errors.
But "index.index.html" does seem to be the same kind of pattern. Does it happen only with the top-level index, or with other directory indexes as well? Does every single one of your internal links say correctly / alone, or has a stray "/index.html" sneaked in? A link checker will tell you, because you'll see it going to both pages-- or the same page twice, depending on how you look at it.
:: slinking off for long-overdue housekeeping of my own in /rats/ and /games/ directories to get rid of, ahem, /index.html links ::