The relative url: wp-admin/admin.php?page=gdata-antivirus-menu-full-scan

This should never happen. You should have to klick the button to trigger a full scan. It also seems to not happen all the time, but I could not determine some logic behind it yet.

@doxthree if you have time, maybe you can help me find out, what happens here. This could be, what the customer called "The full scan runns in a loop" because when every time you go to the full scan page it runs another full scan, this is what it looks like.