These are not valid Plugin Firewall whitelist rules: /a10-imaio/, /a10-imaio/*
The 403 errors show a .php, a .js and a .swf file that need to be whitelisted for the a10-imaio plugin.
These would be valid whitelist rules using Regex for the a10-imaio plugin: /a10-imaio/(.*).php, /a10-imaio/(.*).js, /a10-imaio/(.*).swf
All of your whitelist rules MUST be valid. See this Plugin Firewall sticky forum topic for more help info: http://forum.ait-pro.com/forums/topic/plugin-firewall-read-me-first-troubleshooting/ or click the Plugin Firewall Read Me help button.