WP-Feedmail messes up wp-admin!!!

Hi, since I installed the WP-Feedmail plugin, several features of the admin panel stopped working (e.g. the quick edit button on posts).

I tried deactivating my other plugins, the problem is present only if I enable WP-Feedmail…

Any suggestions?

Thanks for your time.

http://wordpress.org/extend/plugins/wp-feedmail/