vi vs ae

[Tom Allison]

I noticed that somewhere ae has started taking over as the default 
editor in place of vi/vim.
I have tried placing EDITOR="vi" in the /etc/profile line but it 
doesn't always work.

CVS was defaulting to ae.
crontab will sometimes default to ae.
How do I fix this?  ae is not at all what I am accustomed to and was 
rather dismayed to find it so prevelant on all my systems overnight.

Is there some history here I wasn't aware of?