Shifted keys also print non shifted value when typing quickly

[GoogleCodeExporter]

(Originally reported by jmharris)

Using monotone checkout 20/10/09.

Typing a shifted char also prints the non shifted char if you do the
combination fast enough (and release) e.g. output is:

* "2
* @'

This is fairly easy to reproduce, hit shift followed by the desired key and
release both quickly. This only occurs when typing quickly, but it is not
pebkac. 

Original issue reported on code.google.com by njsmith@ucsd.edu on 7 Nov 2009 at 5:21