Why does FreeBSD 8.-0 think that my Dell SX260 have "non-unform processors"?

[Torfinn Ingolfsen]

Hi,
I just booted my Dell OptiPlex SX260[1] from a usb memory stick with
FreeBSD 8.0-release on it. Part of the dmesg output is:
Copyright (c) 1992-2009 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 8.0-RELEASE #0: Sat Nov 21 15:48:17 UTC 2009
    root at almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Pentium(R) 4 CPU 2.60GHz (1295.21-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0xf29  Stepping = 9
  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
  Features2=0x4400<CNXT-ID,xTPR>
real memory  = 2147483648 (2048 MB)
avail memory = 2085347328 (1988 MB)
ACPI APIC Table: <DELL   SX260  >
WARNING: Non-uniform processors.
WARNING: Using suboptimal topology.
ioapic0: Changing APIC ID to 1
ioapic0 <Version 2.0> irqs 0-23 on motherboard
kbd1 at kbdmux0

Full demsg output on the FreeBSD page[2] for this machine.
Why does FreeBSD think that this machine has "non-unform processors?
Ok, the Pentium 4 in it can proably do hyperthreading, but that isn't
much to talk about.
What excatly is non-unform here?

References:
1) http://sites.google.com/site/tingox/sx260
2) http://sites.google.com/site/tingox/sx260_freebsd
-- 
Regards,
Torfinn Ingolfsen