Since I've upgraded to Windows 7 64, this damn device has crashed my computer relentlessly.  I'm on the hunt for a new interface and the Roland Capture series sure looks nice!

I have an MAudio Fastrack Ultra 8R and it works fine on Win 7 64 bit and even Win 8 64 bit.    However, it is my backup interface, my primary is a Roland Octa-Caputure. 

Assuming you have the correct (latest) driver, either the MAudio unit is defective, the USB cable is defective or some problem with the PC.   As you state "upgraded to Win 7 64 bit", was the upgrade completed correctly with all correct drivers?  Is the PC even supported by the PC vendor (or motherboard vendor) for Win 7 64 bit?

I hate my M-Audio Fast Track Pro.
I have it back in the box after about 3 months of fighting it.

Check out the Focusrite Scarlett series. I went with the 18i6 and once I got the Mix Control under my brain a little it's been smooth sailing.

Also comes with some good plug-ins too.

Mike

Well, the great people here on the board up in the Sonar area got me fixed. The Fast Track is not crashing my system anymore! 
At least has not yet 

so what was the problem?

link - new ftu driver update with windows 8 support.  http://avid.force.com/pkb/articles/en_US/Download/Fast-Track-Ultra-Drivers