Map some other function to the insert key

[Yuan Qi]

I hope everyone is aware of this: 
http://mpt.net.nz/archive/2005/04/11/ubuntu

One of the usability problems the author have mentioned in his article 
is the fact that the insert key is mapped to the overwrite mode. Since 
most computer users (even intermediate users) are not aware of this 
mode, they will be confused and frustrated by the software's "buggy" 
behaviour. Therefore, I suggest that we either map a different function 
to this key or just disable it. Personally, I think the Paste function 
is the most sensible function to be mapped to the insert key.