semidivine, the link should actually be going to
post=2 changes depending on the post or page ID, it's actually
post= whether it's a post or page), so I think that something else is wrong here.
Try deactivating all plugins. If that resolves the issue, reactivate each one individually until you find the cause.
If that does not resolve the issue, try switching to the Twenty Ten theme to rule-out a theme-specific issue (theme functions can affect the admin panel).
And, if neither of those resolve the issue, try downloading WordPress again and delete then replace your copies of everything except the
wp-config.php file and the
/wp-content/ directory with fresh copies from the download.
If you need further assistance, please start your own topic.