The FAIL bit was that when I’d do a large USB file copy, without fail (no pun intended), I’d get a
DRIVE IS NO LONGER RECOGNIZED error.
Then all my USB ports would fail to work. To recover, meant rebooting my computer.
The problem got REALLY annoying. I’d be copying podcasts to my MP3 player, and it’ll fail. Or when I was trying to sync my Windows Mobile phone, and it’ll fail.
Microsoft released a patch late January, and since then I have been USB crash free. You can read all about the patch here:
You encounter problems when you move data over USB from a Windows 7 or Windows Server 2008 R2-based computer that has an NVIDIA USB EHCI chipset and at least 4GB of RAM