i flashed the normal version but that was the first link you posted so i dont know about the new one. Not related, but i found that when i use the volume rocker while im in a call to make the in-call volume louder it uses the rocker as sort of a toggle instead of changing the volume.
Waitttt.....It doesn't act as a "toggle" in the call screen. Are you using PointUI's call screen thing? Because with the default WinMo dialer, it works as a volume adjuster, like normal.
Ohhhh...I see what you're saying. It brings up that HTC Volume Slider, and that version only controls System volume. I could try finding a different version, and see if I can make it work. Or, I can just remove it, in general.
I'll see if I can find you a registry edit in the mean time, that will disable that volume slider. Tweak to increase in-call volume at Post 122