Vim 7 mapping change?

[Robin Becker]

I am trying out Vim 7.0 and see a major difference in the way my old mappings 
work. I have for many years mapped g to G so I can use the lower case g to jump 
around the file instead of shift+g.

Under 6.4 and earlier that works well, but with vim 7 I see a big delay between 
hitting the g key and the jump to the bottom of the file. Same if I type 1g. It 
seems as though the mapping is not happening immediately (I assume to allow for 
a follow up character to be recognized). Is there any way to fix this or is it a 
permanent feature?

In 6.4 even though there are similar possibilities for g as a start character I 
don't see this delay.
--
Robin Becker