Code:
[ sylvester :: cam ]-> cat /proc/cpuinfo | grep name
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
I can assure you the problem is not with your CPU
Try using the noapic option when booting from the installer CD and see if it helps. Different CDs are different but most should show (however briefly) a short instruction on how to add kernel parameters.