Is it possible to configure grub to have a dual boot setup behaving like described below?

* When turning on PC and doing nothing, the default system should start as soon as possible without waiting for a countdown.
* When wanting to boot another system, a key must be pressed to get to the normal grub menu to select a system.

Furthermore, I recently switched from grub legacy to grub and discovered that it takes notably longer to load before the menu shows up... Is it possible to reduce this time and get a fast boot?

My current `/boot/grub/grub.cfg`: [grub.cfg](http://gist.github.com/3974988)