Fraps Trial Is Dangerous, Dont Install!!
There is the program called Fraps and it is basically a very very popular application that shows how many frames per second you get in-game and it can record games on your screen.
It comes in two versions: the trail and full
To access the full version you have to pay for it.
Like most people, if you plan on buying software and there is a trial version that you can run, you run the trial to test it out, then install the bought version.
Now heres the problem, after installing the trial version it is practically impossible to get the full version to run. The trail version has some kind of protection called armadillo. It basically puts loads of stuff in your registry and even puts stuff in your windows\system32 directory.
It may not necessarily be dangerous, but its really annoying for people like me who actually bought the legit version and get their money wasted cause of crap software like this.