Jumping from 3.0.10 to 3.0.12 broke.
Confirmed commenting out the following two lines has worked on at 5 sites so far now.
//display about page after Update
//if ( ! get_site_option( 'backwpup_about_page', FALSE ) && $_REQUEST[ 'page' ] != 'backwpupabout' )
//wp_redirect( network_admin_url( 'admin.php' ) . '?page=backwpupabout' );
Can we just ditch that whole display on update feature? Really it isn't necessary.
Darn - that will teach me to update this plugin on multiple sites again (got me twice now). Ouch - in for a long night...