Edge not (completely) mounting via mini USB on a Windows Vista system either.

I plugged the edge into my wife's Vista laptop.
It started up the Driver Software Installation process. The status dialog reports these devices:

USB Composite Device. Ready to use
USB Mass Storage Device. Ready to use
Android. Searching . . . . (Now it says "waiting for user inout..." for other reasons)
Android File-Stor Gadg USB Device. Ready to use

Windows could never find an appropriate driver, so I cancelled the dialog. It seems there is no driver for device "Android", but the other three "parts" of the edge seem to be fine.

"Seem" to be. When the edge is plugged into Windows the laptop shows a Removable Disk F:, but opening the "disk" results in a dialog reporting "Please insert a disk in Removable Disk F:".

I've tried this with and without the 32G SDHC card mounted in the edge.