Odd thing in menubar

[Chrysaor]

I have this menubar "item" next to apple logo, it highlights blue when I mouse over it, anyone know where does it come from and how do i get rid of it?

 

[WildCowboy]

I believe that means that you have set up a Hot Corner using the Butler application. Could that be the case?

 

[Chrysaor]

Yup, that was it, thanks a lot!