Below is a post someone put up on one of Google's Groups... I guess years
ago when I started with version 4 I heard this said about NOF.. ?? Is there
away to clean up ?

"This has nothing to do with your rankings, but you've got some
incredibly bloated code. You ought to look into getting that cleaned
up, just to make upkeep on the site easier for you in the future.

As far as the change in rankings goes, I wouldn't be surprised if
Google had stopped giving you credit for many of your backlinks.
That's very common these days. It doesn't mean that you've done
anything wrong; it's just that G is becoming much more picky about
which links to your site are going to help you. "