The bug is partially fixed in RC6, in the dual xeon 12c/24t it runs at 100% cpu
usage, but with single-core hyperthreaded processors, like single core atom,
pentium 4, the option of "All CPUs" is not present, this should fix it:
At line 5906 of pvengine.cpp:
Change this:
if (NumberOfCPUs == 1)
with this:
if (ThreadCount == 1)
