My phone hangs. Like the best of them... :(

[lists at kitepilot.com]

Help... 

After I finally got my Freerunner sort-of working, I have missed a few calls 
because the screen ignores my attempts to get a call.
Or a text message... 

In the worst instance, there was just a tiny lit up line on the screen and I 
had to pull the battery. 

The device seems to be responsive, because it changes from page to landscape 
when I roll it, but it still ignores the touch... 

Is this "normal"?
Has anybody experienced it?
Is there a fix?    :(
ET 

PS: Also, is there some sort of screen protector?
I still have on the plastic it came with, but I an see it won't last a whole 
lot..