Visit a new file and type some arbitrary text and move point to begin  
of line.
C-x C-f newfile RET bla C-a

If point is at line 1 column 0 what-page says (expected):
Page 1, line 1

but when at column > 0 (moved point with C-f) what-page says:
Page 1, line 2

I get this behavior with 23.2.1 on os-x (macports) both with gui or  
not, e.g.

GNU Emacs 23.2.1 (powerpc-apple-darwin9.8.0, NS apple-appkit-949.54)
  of 2010-05-11 on mac.fasel.at

I may provide more Information if needed, of course.

-- 
Markus