Well it turns out I can not install V9.11 on that MB
it reboots 1/2 way through the install every time
But it does work OK from the install CD with V8.56
I will get a differant MB to install the 4870 in
I told you that this would be an adventure. I had the same thing happen on one of my systems. I installed the CAT9.1 package available here and everything worked fine. Make sure to completely remove the other one before installing.
19 primes found. The largest: 1351*2^617684+1 (185945 digits)