My i7-2600 on a Gigabyte P67 mobo is running just fine right now. I'm only using the SATA3 ports, so this problem will never affect me. Regardless of this, Gigabyte has already publicly declared that I will be able to exchange my mobo for a new one once they've gone and _made_ those new ones.
this i7-2600 is the _fastest_ cpu I've ever run into. It's an absolute screamer -- running TEN kvm VMs under ubuntu 10.04.01, at a posted load average of 1.02. to the kernel, the hyperthreading makes it look like an 8-way box, and my world community grid numbers (overnight, when the kvm machines are shut down) are smokin'.
I'd rather this hadn't happened, but Intel/Gigabyte are handling this like pros. I'll be using this server until such a time as the new mobos are available.