I noticed an issue with the pagination in the backend on a network install. On lines 850, 852 and 895 of luc_admin.php the plugin uses $_SERVER['SCRIPT_NAME'] to build the link to the next page. On a network install this will allways leed to the first blog. Using admin_url() instead should build the correct url.
As far as I am aware this should also work on a normal install. If you agree, I would really appreciate it if you could include this in your next release of the plugin as I had to hack my install but would like the benefit of your next update. I would have made you a track issue, but I am not used to his bugtracker and just had 5 minutes... sorry :-)
Thanks for writing such an nice tool. It really helps to motivate our bloggers.