Hi, 
I was using QNX 6.4.1 on virtualbox with 2 CPUs without problems.
When I tried out QNX 6.5.0 ( M4 and M9 ) I found that only setting up 1 CPU is working

here is the errormessage when running qnxbasesmp.ifs

apic_local_intr.c:212 -- ASSERT((cpu ==0)||(lapic_read(LAPIC_LLOR)&LVT_MASKED)) failed!
CPU 1 start failure

Would be nice, if this setup would be possible again.

Greeting,
Stefan