I dont see a picture attachment but if you are saying there are not guests in your jos_sessions table the problem is with your joomla and not the moolet or mootools. That table is part of your core system, I am just reading from it but look like there is nothing there for me to read. On that issue I would go to the joomla forums and do a search on missing visitor sessions and so on.
I am using cocoaMySQL for my data_base_ app. If is a mac OS X application that runs on my computer, not on my web server. If you are on a shared hosts some will and some will not give you remote DB access to use it.
http://cocoamysql.sourceforge.net/hope that helps
brian