How did you uninstall it? Did you use the supplied uninstaller? If so, I'd like to know a couple of things:
i. Did the uninstaller ask you for any personal information before allowing you to uninstall? If yes, what?
ii. After uninstalling and restarting your computer, are there any 'mackeeper helper' processes running in the backgournd (run the Activity Monitor.app and search for 'Mackeeper'. Choose 'All Processes' (not 'All Processes Hierarchically') in the drop down menu in the title bar of Activity Monitor's main window, and type 'Mackeeper' in the filter box. Do the same with 'zeobit' and '911'.
iii. If you have EasyFind (if not, you can geet it for free), could you type in 'MacKeeper' and see if it finds anything. Also 'Zeobit' and '911'. Make sure you set EasyFind to search invisible files and folder, and package contents.
I would be very grateful if you could let us know the answer to these questions. You will be grateful too, to know that the uninstaller really did uninstall everthing (I have reports of users who say it doesnt', and I'd like to verify whether that's true or not).
Thanks in advance!