vim Keybindings

[Drew Tomlinson]

I'm experiencing an annoying problem with vim on FBSD 8 that I don't 
have on FBSD 7.  Whenever I start vim, if I press the down arrow as the 
first key, it deletes the first line of my file and enters insert mode.  
All the other keys work fine and even the down arrow works fine after 
the first press.

I've searched for help but haven't turned up anything relevant.  Any 
ideas on what I can check?

Thanks,

Drew