[TippeX]

if you used oneprocessorlaunch and still had the issue then the problem is NOT with the cpu.. as the tool one processor launch simply sets the process to only be allowed to use one processor BEFORE its code is executed (changing it in task manager is AFTER some of its code has been executed)..

and as dab said googling isn't exactly 'scientific', you've just said you check with task manager, and the fact you state about different processors implies you got the results from google, and / or tried them on 3 DIFFERENT machines.. so all results from that can't be relied upon..