Intel Macbook Leopard not responsive keyboard

Hello everybody,
I have been experiencing a very strange problem with my macbook with the new Leopard installed.
Apart from noticing that boot times have increased since installing leopard, if I leave my laptop idle for a certain amount of time it goes into screen saver mode as normal and when I try to resume and log in again by providing password the keyboard becomes un-responsive for at least 40/50 seconds leaving me with a black screen until it decides to go back to log in window and lets me back into the system.

I received a brand new update that was aimed at solving this problem two days ago and initially I thought that the issue was solved but today i seems to be back to scratch.

What is causing this very annoying problem?

Is there another fix/update on its way for this?
And, Is anybody else experiencing slower boot times after upgrading to Leopard?


Cheers

Mirco