I got up to the part about talking to yes man and after that i beat him to death with a pool cue. I want to take control of the securitons but i didnt know you had keep yes man.
is there another "Yes Man" some where in vegas cuz he said if i kill him he can go into any another securiton.

No.

the one you reffer to about going into another securitron is Victor... i had him die to some cazadors and found him in new vegas well and sound telling me he can jump to other machines ^^
Freaky....

I killed yes man, and he just jumped into another securitron and apologized to me for not being able to die.

This is the only thing about Yes Man (aside from the humorous dialogue, of course) I like. I can kill him over and over again and he doesn't care

Where was he when you killed him?