>> Running Vista here, I estimate about 10-20 fps (assuming it goes up one 
>> line per frame).
>
> Then why the hell is my Vista box always so freaking slow?!!

Ooh I just tried it on my XP laptop, and by the time the red has got to the 
top it's only 80% of the way there on Vista.  My Vista box is about 10x 
faster than my laptop so who knows what is going on.

Does it make a difference under Vista if you take out the 
"ControlStyles.OptimizedDoubleBuffer" flag?

Also you are locking the bitmap for quite a long time (relatively), you 
should literally lock, memcopy, unlock. Any processing should be done 
outside of that on a separate buffer.  Maybe it is holding up Vista somehow 
when it's trying to copy the bitmap to the graphics card?

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