[Plugin: WordPress Popular Posts] No Table / Database Created

Hi,
I checked my database but there are no wp_popularpostsdata and wp_popularpostsdatacache created during the plugin installation. I give the user database full permission. I also check my theme and found <?php wp_head(); ?>.
Server is using lighttpd.
Any advice would be greatly appreciated.
Thank you!

http://wordpress.org/extend/plugins/wordpress-popular-posts/