The problem I had in that thread was caused by a specific website that somehow gained access to my computer. It would populate with pop-ups and other random crap and it was really, REALLY hard to get rid of- a complete system overhaul was long in the works so I just bit the bullet.
In your case "Dropper" does just what it says. it is finding certain areas of key interest to whomever is responsible for the software and dropping DRM software. Either to send, receive or generate information of some kind. In most cases it will be simple stuff, like your age, general location and search terms.
This might be kinda hard to understand- but if you ever go to some site (like RCNT or some other site that relies on advertising to make any kind of money) you will usually see ads. these ads can be for millions and millions of different products. If you ever see an add that is from, say.. Match maker.com that says "Meet girls in Dallas!" you have a dropper on your computer.This thing is simply telling match maker you live in Dallas and may be interested in finding someone from Dallas.
Either way- they are annoying. If you use any kind of P2P or torrent software you almost certainly have a couple kinds of small, unintrusive spyware/malware DRM's on your computer. First things first tho. Open your task manager and under "processes" look for stuff like "Internet Explorer Tool bar" or "when you save" sometimes it can even be named something you would never think to get rid of like "System 32.dll"
In most cases, if you find something in your task manager that you think might be causing a problem, shut it down. If it was a bad guy lurking in the shadows you just killed it. it it was a needed, viable system process your computer will just reboot and restart it. After you stop any suspicious stuff, find the root folder and/or registry keys and delete them for good measure.
If you are still having problems post here again and I will try to help you some more.