I hit this bug this past Sunday. We restore the IP interfaces, but still only half of the servers were able to access the HSRP gateway. Failed back to the 7.1 software, and lost the Vlan definitions and FEX port configurations.   We are planning to r...

We are running 6.0(2)A3(2), and I just enabled the VPC feature on a 3524 (aka 3548).