Vista - Airlink AWLH6070 freezes vista x64 on upload

I bought a new Airlink AWLH6070 on my Vista Ultimate x64 (quad-core with 8GB RAM). The download speed is decent but any upload (sending a file attachment, testing upload speed through speedtest.net or file sharing or even remote desktop) will immediately freeze the OS, even in Safe Mode. Tried a bunch of networking tweaks suggested by this forum and variety of others (like disabling autotuning etc) but none works. Using the latest driver from Airlink website and it does have a Vista x64 driver included. Their tech support is of no help. Any one with such experience? Any work around is highly appreciated.

Just an update: the problem has been solved by updating the driver, not using anything from Airlink (their support and driver update really suck), but using a most-updated driver directly from Ralink (nov. 2008). Airlink and Miscrosoft tech support can not solve the OS lock issue and I managed to find the Ralink chip used in this card (RT2860) even though Airlink hides everything.