On Wed, Dec 5, 2012 at 9:48 PM, Eli Zaretskii <eliz@gnu.org> wrote:
[...]

I don't see this in the latest development sources.  Can you show a
precise recipe, starting with "emacs -Q"?


Yes, 

1. start emacs with "emacs -Q" as you mentioned, 
2. Open any file having multiple lines of text/code and try 
using C-p to move up a line. This works as expected. 
3. enable global-linum-mode
4. Try it again. C-p moves two lines up

Regards,
Vineet