I tried updating from 0.9.7.1 and I may have clicked on the back to plugins page before it finished activating.
Ended up with a blank wp_admin screen but the public blog still worked.
I had to delete the "broken-link-checker "folder, I also deleted the wp_blc_ tables from the database.
This is a new blog only 1 test post.
I can re-install and activate 0.9.7.2 but I can not upgrade
to 1.2.2 without loosing the admin panel.