You installed MacKeeper on your Mac.
It is crapware. everything it does can be done more safely and for no cost with other applications.
My suggestion is to uninstall ASAP.
Hello - We recently purchased a Mac (for the first time),
Welcome to the Mac world.
There is a lot to learn, but most of all you should un-learn everything you learned about Windows. Among them is the desire to load up your Mac with a bunch of junk it does not need and will only make your life miserable. MacKeeper is probably the worst example.
Mac OS X incorporates all it needs to protect itself from viruses and malware. You already paid for it and you do not need any commercial anti-virus utilities. Most are worthless and some (like MacKeeper) are harmful.
I suggest you take a quick read through this: Tips to keep your Mac in top form
and at your leisure: http://www.apple.com/support/mac101/