[support] Drupal 6.22 and ssl admin access

I just upgraded to Drupal 6.22, and now I get 'Access Denied' on all the admin pages under https. It worked fine before, and I can see the page at the https url, so I'm guessing it's a program problem. If I turn off secure pages it works fine at the regular port 80. I've cleared cache, cookies, and the session tables. Has anyone else seen this? thanks. -Don-