I have Update Status 5.x-2.3
One of my site (live not local) I cannot view the admin pages, but the other that share the same codebase can !
I disable update_status, things back to normal. When I tried to enable it again, same problem.
I found other people are having the same problem, but can't fine a issues posted under update_status module.
http://drupal.org/node/294003
http://drupal.org/node/253923
Comments
Comment #1
dww#222073: Update Status causing Drupal to run very slowly