Why does WM draw the dialpad so slow??

[Torx]

this is one thing thats always irked me about a windows mobile phone..
when you bring up the dialpad it draws it in really slow and checkerboard-like
i hated this with wm5, and its still apparent in wm6

is this something we have to deal with due to hardware, or is it something that can be alleviated through any reg tweaks??