You can use the previous editor by changing the 10th line in
web2py/applications/admin/models/0.py to
TEXT_EDITOR = 'edit_area' or 'amy'
The keybinding problem seems an issue of ACE, I'll take a look ASAP
In which OS / Browser has happen the problem?
Best regards
Mariano Reingart
http://www.sistemasagiles.com.ar
http://reingart.blogspot.com