CFS3 freezes and CTD's too often

[Galand]

My MS CFS3 regularly (10-20 minutes) freezes/locks up in the middle of a flight and after sending the error report to MS it CTD's. I thought it was graphics horse power, but I just installed a nvidia GT9500 with 1 Gb and it still crashes. I have an AMD Dual Core with 2 Gb.
The Application Event Viewer shows "Fault address 0x00119a27" most of the time. Sometimes "Fault address 001e7015 or 00100d4c". I have re-installed CFS3 3.1 and 3.1a several times, it still locks up. I cannot find any explanation for those fault codes at the MS site. I have OFF and ETO also on the machine, both with 'Multi CFS". Both also lock up. It sort of spoils the fun to get shot by the system instead of by the enemy
I installed a pure stock CFS3 with 3.1 and 3.1a and nothing else. It stayed up for approx 1 hour and then locked up.
I have now OFF, ETO, CFS3 with lots of add-ons and a clean Stock CFS3 on my machine. Maybe 4 CFS's is too much?
They all lock up in the same way and with the same fault codes. Can anyone suggest something because I seem to spend more time re-booting than flying.
thanks

[Galand]

Apparently solved!
I installed the "AMD dual core optimizer" which addresses conflicts between modern dual core CPU's and "antiquated"  engines like CFS3. Whatever...
Net net, no more CTD's or freezes.