It looks like you used to have MacKeeper at some point in the past, but you deleted it. However, it was set to launch at startup, and it is taking a long time to launch because it keeps searching for MacKeeper but can't find it.
Check your Login Items by going to system preferences->accounts->login items. Note that if you see it, you need to click on it and hit the - button. Unchecking it doesn't make it go away; it just tells it not to launch hidden.
