Drive cleaner and all its variants is also known as a vundo trojan or virtumonde trojan and if it gets in is an absolute pest to get rid of.
If you have sun java installed then you need to get the latest version and uninstall older versions of it, it doesnt uninstall the old versions when you update and that is how it gets in through an exploit on older versions of sun java still installed on PC's.
http://forums.spybot.info/showpost.php?p=1...amp;postcount=2The latest version is version 6 update 3