usb not working after lion upgrade

Hello all,

I have a MBA: 121.33GB, 1.4GHz Intel Core 2 Duo, 4GB 1067 MHZ DDR3. I recently upgraded to Lion, and immediatly after the upgrade the USB ports are not working. I have a USB ethernet dongle that I use to connect at work, and have been unable to do so. A couple things that I have tried so far:

-removing/adding the device

-adding a new location

-resetting the PRAM

I have had limited success by running ifconfig en3 down && ifconfig en3 up . After this I can ping out to other machines on the network after this, but cannt bind to AD. Also the GUI still says that I have no ip, though ifconfig says otherwise.

Any thoughts?