tedster - 4:07 am on Mar 15, 2006 (gmt 0)

My educated guess is that using session IDs in the query string is strangling your site. The adwords tracking code wouldn't do it, but the session id's would.

Find another way to do what you need to do for sessions -- cookies or some other method that does not require a different url for each session.

You also could replace in-site home page links with http://www.example.com/ -- instead of home.htm. This is probably not the cause of your pages vanishing, but it could help your home page PR. Even after you fix the session ID issue, your in site links as they are will mean that home.htm can accumulate its own PR, separate from http://www.example.com/ -- and fixing internal links will stop that split from happening. But as I said, this is quite secondary.