I also use Spybot S+D and i also have had this happen. Its not a problem. If you are doing a scan immediately after the first scan is finished just to see if everything is gone, you may find that some entries are still there. This is because Spybot can not always delete everything the first time. Simply delete it again. The things Spybot finds can get into your computer very quickly depending on what you do with your computer. So if you mean that it is still there the next day after everything has been deleted, that too is perfectly normal.