I'm using Popularity Contest 1.2.1 and WP 2.0.5. I was looking through my server error log and found the following message:
script '/var/www/vhosts/mydomain.tld/httpdocs/wp-content/plugins/popularity-contest.php' not found or unable to stat, referer: http://www.mydomain.tld/wp-admin/edit.php
A similar message is generated for every Admin menu movement entry (Manage, Plugins, Options, Options->Popularity).
It appears the PC is trying to record a "view" for every Admin screen and isn't detecting I'm logged in as Admin.