Login Server error message every time I start my Mac. (pic attached)

Every time I power up my Mac Pro, I get the attached message upon start-up.

If I click on 'Relaunch' it does nothing.
I have reported it, but nothing has changed.
Clicking on 'ignore' makes it go away, but it reappears every time I power up my CPU.

AppleCare didn't even know what it meant either!

Any suggestions? What is "LOGINserver" anyway?

 

Mkrishnan you are totally brilliant! Yes, I do have a Brother printer installed, and after reading all the postings you linked to, I now know the remedy.

I will uninstall the printer and get the latest driver from Brother. I will send an update once I have done this. Thank you ever so much. It was driving me crazy!

p.s. The Brother printer sucks anyway (eats ink even when not powered up) so I will consider dumping it soon.

Cheers!
Ian