Hello, 

I've recently switched to org mode as my fundamental mode, and do

almost all of my writing in it now. One issue that I've encountered,

however, is that with a lot of text under a single subheading, when

holding the up arrow key to move point up (running previous-line, found

in global-map), emacs throws the "beginning of buffer" exception (and

rings the bell) before moving point up. I still am able to move up a

line, it's just that the cursor movement when holding down the key is no

longer smooth, and I get a visual warning.

I've found that this only occurs when visual-line-mode is set (I use global-visual-line-mode). When I turn it off, I get no errors.