Did you upgrade the plugin through the wordpress admin or a manual upload? I upgraded the version on my site through FTP upload and it showed up like this until I deactivated and reactivated the plugin.
worked for me to. After upgrade to wp 3.2.1 and link library to 5.0.8 my category listing was messed up. Deactivating and reactivating the plugin solved the issue. Btw I upgraded directtly from within wp admin.