When your workplace accumulates random hardware over the years, there aren't always people who know/remember how it works around (or manuals). Someone got this LCD monitor on their desk today, but the mouse would go off the screen, and a few people standing around it couldn't figure out why. So, they replaced her monitor.
2016 Update:
It's 10 seconds, at least according to the FAQ for this monitor:
http://www.samsung.com/ph/support/skp/faq/885135
The symptom: everything in the menu was locked (except for brightness and contrast), so we couldn't tell which value was the problem.
(probably the Horiz-pos or Vert-pos setting..)
Trying to change anything just said " auto adjustment locked"
The LCD monitor that had been on my desk disappeared... so I took the problematic one,
did a little research, and found the answer
Hold down the menu button for more than 5 seconds with the monitor switched on.
This action enables / disables this feature.
Maybe it's 10 seconds.
It's probably in the manual.
If I put a post-it that says 'Broken' on it, no one will take it...
2016 Update:
It's 10 seconds, at least according to the FAQ for this monitor:
http://www.samsung.com/ph/support/skp/faq/885135