First I want to say that I think that your plugin is great, but I installed it on a multisite installation and while it appears to be working, I think it is causing a major problem (although I am not sure).
All new blogs that are created are redirecting to the blog that I have adinjection installed on, instead of wp-admin. The reason why I think adinjection my be the problem is because after the update today, Adinjection no longer appears in the plugin list of the blog that is is active on. I cannot turn it off inside the dashboard.
I would like instructions on how to completely remove the plugin and all database tables created to see if it fixes the problem with blogs redirecting. Not that I don’t want to use it or think it is a good plugin. I read that (after the event) that is it not compatible with multisite.
‘bid46’ is certainly nothing to do with Ad Injection. I’ve never tested the plugin with multi-site, I’ve heard it works for some people, but not for others. The problem you are describing sounds pretty weird.
The simple way to uninstall it is just to delete the ad-injection directory (in the plugins folder). That will completely disable it, but if you are using a caching plugin you’ll have to wait for the pages to expire, or delete the cache for all the adverts to be gone.
If you want to manually remove all the database entries without uninstalling via the proper means you can have a look at uninstall.php in the ad-injection folder which will show you what the options are called, and which other files to delete.