Yes,I believe we are saying the same thing about the allprogs...its a something lost in translation thing. 
The glow thingy I didnt see til I added the mask...and it didnt work til I deleted the block files again.
Nice that MS put it behind the button(better control),you would expect them just to shove it on top. 
I still see it unmasked while first opening anything pinned.(it completely surrounds the button)
A little tip for the skinners...the mask will show a film on the taskbar if you have any black there in the mask.You should only have black in your mask on mouseover sates.
Another question Dani...does the progress effect lay on top of the buttons or replace the button?
Also...I wonder if this masking will work in other areas like the mouseover flash and the progress bar flash?