I've gotten this message before, and sometimes it correlates with problems, and other times it doesn't. Does it cause problems ? If not, ignore it.
If it causes problems, first try 'noioapic', this only disables IO-APIC not all of APIC, and causes less side effects. As for side effects of turning off APIC, this may be relevant:
Then, I may try updating the BIOS, seeing that this may indeed be a BIOS bug, but check the BIOS changelog first and see if it mentions something about APIC fixes. If it doesn't it may not be worth it.