This plugin is a godsend, thank you! And it worked fine when installed on a 2.9.1 WP installation. However I was busy updating and re-installing some other plugins that we were using on a previous version when I noticed that a new user "banner" (which we don't have) was added to the bottom of the list for each post. It doesn't seem to affect the front end output at all (i.e. "banner" doesn't display as an author in our Posts: http://www.thelitigator.ca/
When I try to delete "banner" on a post, it dissappears until I revisit the Edit Post page and then it re-appears again.
Likely a simple plugin conflict and I am busy deactivating the plugins that I re-activated one by one to see if I can source the problem.
If you have any insight, this would be very helpful.