Macbook Pro 17 Mid-2009 Freeze during Wifi Time Machine backup
I have a 17" Macbook Pro 17" Mid 2009 model, running ML 10.8.2, 8GB memory. I am backing up the system to an Airport Extreme shared disk with Time machine over Wifi using the 5GHZ band. My system has all-of-a-sudden started locking up completely during backup. No mouse movement, and everything frozen -- even the clock. The only way I am able to back up is directly connecting via ethernet to the AE, or by attaching a USB disk.
The system has been working for over a year to the AE TM, and at first I thought it was OSX 10.8.3, so I wiped out and reinstalled from scratch and the system still locks up on 10.8.0. So far, it's only over wifi. I also tried during my troubleshooting, using Carbon Copy Cloner to a Sparsebundle image over Wifi with the same results.
I can access and copy files from the AFP hosted disks on the AE with no problem. So it seems to be something in Rsync and the Wifi drivers that aren't jiving.
Any ideas?
Thanks in advance
MacBook Pro (17-inch Mid 2009), OS X Mountain Lion (10.8.2)