I'm having to exact same problem, any configuration of WM6.1 has the same result: Only being able to receive about 25% of sent MMS after soft-resetting. Also any Video MMS recived come as a series of jpgs... @ 1 FPS! Trying several different versions of Arcsoft produces the exact same result. Updating the radio to 1.43 did not help (hey.... I was just hoping it would) The only thing that resolved this -- in a relatively unsatisfactory way -- is going beck to WM6 or WM5... Hopefully we can find out why this is happening (PPCgeeks has been awesome so far! =D>) I have to say WM6.1 is great other than that!
