Forum Moderators: mack
Have you read the threads on domain [google.com] and URL canonicalization [google.com] here at WebmasterWorld?
Jim
If you can find where the links to .com/index.html are and get them altered to point to the .com version only, that will eventually solve the problem.
It's also best practice to make sure all the links within your site reference pages the same way to avoid this issue.