I've got a nice little system here built on the SuperMicro H8DAE mobo 
(repackaged as A8DAE from Acme Micro 
http://www.acmemicro.com/estore/merchant.ihtml?pid=42&lastcatid=170&step=4 )

This has 8 fan headers on it (including two CPU fans); is there any chance of 
getting envstat to report data from more than three?

Here's the dmesg, for those who like to look at such things :-)

NetBSD 2.0.2_STABLE (YERTLE-$Revision: 1.4 $) #5: Tue Aug  2 10:33:45 PDT 2005
         cak@yertle.landsonar.com:/usr/src/sys/arch/amd64/compile/YERTLE.MP
total memory = 12287 MB
avail memory = 11838 MB
mainbus0 (root)
mainbus0: Intel MP Specification (Version 1.1) (MSI      RHAPSODY    )
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Dual Core AMD Opteron(tm) Processor 265, 1794.97 MHz
cpu0: features: f7dbfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu0: features: f7dbfbff<PGE,MCA,CMOV,PAT,PSE36,MPC,NOX,MMXX,MMX>
cpu0: features: f7dbfbff<FXSR,SSE,SSE2,B28,LONG,3DNOW2,3DNOW>
cpu0: I-cache 64 KB 64B/line 2-way, D-cache 64 KB 64B/line 2-way
cpu0: L2 cache 1 MB 64B/line 16-way
cpu0: ITLB 32 4 KB entries fully associative, 8 4 MB entries fully associative
cpu0: DTLB 32 4 KB entries fully associative, 8 4 MB entries fully associative
cpu0: calibrating local timer
cpu0: apic clock running at 199 MHz
cpu0: 16 page colors
cpu1 at mainbus0: apid 1 (application processor)
cpu1: starting
cpu1: Dual Core AMD Opteron(tm) Processor 265, 1794.89 MHz
cpu1: features: f7dbfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu1: features: f7dbfbff<PGE,MCA,CMOV,PAT,PSE36,MPC,NOX,MMXX,MMX>
cpu1: features: f7dbfbff<FXSR,SSE,SSE2,B28,LONG,3DNOW2,3DNOW>
cpu1: I-cache 64 KB 64B/line 2-way, D-cache 64 KB 64B/line 2-way
cpu1: L2 cache 1 MB 64B/line 16-way
cpu1: ITLB 32 4 KB entries fully associative, 8 4 MB entries fully associative
cpu1: DTLB 32 4 KB entries fully associative, 8 4 MB entries fully associative
cpu2 at mainbus0: apid 2 (application processor)
cpu2: starting
cpu2: Dual Core AMD Opteron(tm) Processor 265, 1794.89 MHz
cpu2: features: f7dbfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu2: features: f7dbfbff<PGE,MCA,CMOV,PAT,PSE36,MPC,NOX,MMXX,MMX>
cpu2: features: f7dbfbff<FXSR,SSE,SSE2,B28,LONG,3DNOW2,3DNOW>
cpu2: I-cache 64 KB 64B/line 2-way, D-cache 64 KB 64B/line 2-way
cpu2: L2 cache 1 MB 64B/line 16-way
cpu2: ITLB 32 4 KB entries fully associative, 8 4 MB entries fully associative
cpu2: DTLB 32 4 KB entries fully associative, 8 4 MB entries fully associative
cpu3 at mainbus0: apid 3 (application processor)
cpu3: starting
cpu3: Dual Core AMD Opteron(tm) Processor 265, 1794.89 MHz
cpu3: features: f7dbfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu3: features: f7dbfbff<PGE,MCA,CMOV,PAT,PSE36,MPC,NOX,MMXX,MMX>
cpu3: features: f7dbfbff<FXSR,SSE,SSE2,B28,LONG,3DNOW2,3DNOW>
cpu3: I-cache 64 KB 64B/line 2-way, D-cache 64 KB 64B/line 2-way
cpu3: L2 cache 1 MB 64B/line 16-way
cpu3: ITLB 32 4 KB entries fully associative, 8 4 MB entries fully associative
cpu3: DTLB 32 4 KB entries fully associative, 8 4 MB entries fully associative
mpbios: bus 0 is type PCI
mpbios: bus 1 is type PCI
mpbios: bus 2 is type PCI
mpbios: bus 3 is type PCI
mpbios: bus 4 is type ISA
ioapic0 at mainbus0 apid 4 (I/O APIC)
ioapic0: pa 0xfec00000, version 11, 24 pins
ioapic1 at mainbus0 apid 5 (I/O APIC)
ioapic1: pa 0xfebfe000, version 11, 4 pins
ioapic2 at mainbus0 apid 6 (I/O APIC)
ioapic2: pa 0xfebff000, version 11, 4 pins
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
ppb0 at pci0 dev 6 function 0: Advanced Micro Devices AMD8111 I/O Hub (rev. 0x07)
pci1 at ppb0 bus 3
pci1: i/o space, memory space enabled
ohci0 at pci1 dev 0 function 0: Advanced Micro Devices AMD8111 USB Host 
Controller (rev. 0x0b)
ohci0: interrupting at ioapic0 pin 19 (irq 10)
ohci0: OHCI version 1.0, legacy support
ohci0: SMM does not respond, resetting
usb0 at ohci0: USB revision 1.0
uhub0 at usb0
uhub0: Advanced Micro OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1 at pci1 dev 0 function 1: Advanced Micro Devices AMD8111 USB Host 
Controller (rev. 0x0b)
ohci1: interrupting at ioapic0 pin 19 (irq 10)
ohci1: OHCI version 1.0, legacy support
usb1 at ohci1: USB revision 1.0
uhub1 at usb1
uhub1: Advanced Micro OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 3 ports with 3 removable, self powered
vga0 at pci1 dev 4 function 0: ATI Technologies Rage XL (rev. 0x27)
wsdisplay0 at vga0 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
pcib0 at pci0 dev 7 function 0
pcib0: Advanced Micro Devices AMD8111 LPC Controller (rev. 0x05)
viaide0 at pci0 dev 7 function 1
viaide0: Advanced Micro Devices AMD8111 IDE Controller (rev. 0x03)
viaide0: bus-master DMA support present
viaide0: primary channel configured to compatibility mode
viaide0: primary channel interrupting at ioapic0 pin 14 (irq 14)
atabus0 at viaide0 channel 0
viaide0: secondary channel configured to compatibility mode
viaide0: secondary channel interrupting at ioapic0 pin 15 (irq 15)
atabus1 at viaide0 channel 1
Advanced Micro Devices AMD8111 SMBus Controller (SMBus serial bus, revision 
0x02) at pci0 dev 7 function 2 not configured
Advanced Micro Devices AMD8111 ACPI Controller (miscellaneous bridge, revision 
0x05) at pci0 dev 7 function 3 not configured
ppb1 at pci0 dev 10 function 0: Advanced Micro Devices AMD8131 PCI-X Tunnel 
(rev. 0x12)
pci2 at ppb1 bus 2
pci2: memory space enabled
bge0 at pci2 dev 5 function 0: Broadcom BCM5704C Dual Gigabit Ethernet
bge0: interrupting at ioapic1 pin 2 (irq 9)
bge0: ASIC unknown BCM5704 (0x2100), Ethernet address 00:30:48:75:4a:fa
brgphy0 at bge0 phy 1: BCM5704 1000BASE-T media interface, rev. 0
brgphy0: using BCM5704 DSP patch
brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 
1000baseT-FDX, auto
bge1 at pci2 dev 5 function 1: Broadcom BCM5704C Dual Gigabit Ethernet
bge1: interrupting at ioapic1 pin 3 (irq 10)
bge1: ASIC unknown BCM5704 (0x2100), Ethernet address 00:30:48:75:4a:fb
brgphy1 at bge1 phy 1: BCM5704 1000BASE-T media interface, rev. 0
brgphy1: using BCM5704 DSP patch
brgphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 
1000baseT-FDX, auto
aapic0 at pci0 dev 10 function 1: Advanced Micro Devices AMD8131 IO Apic (rev. 0x01)
ppb2 at pci0 dev 11 function 0: Advanced Micro Devices AMD8131 PCI-X Tunnel 
(rev. 0x12)
pci3 at ppb2 bus 1
pci3: memory space enabled
aapic1 at pci0 dev 11 function 1: Advanced Micro Devices AMD8131 IO Apic (rev. 0x01)
pchb0 at pci0 dev 24 function 0
pchb0: Advanced Micro Devices AMD64 HyperTransport configuration (rev. 0x00)
pchb1 at pci0 dev 24 function 1
pchb1: Advanced Micro Devices AMD64 Address Map configuration (rev. 0x00)
pchb2 at pci0 dev 24 function 2
pchb2: Advanced Micro Devices AMD64 DRAM configuration (rev. 0x00)
pchb3 at pci0 dev 24 function 3
pchb3: Advanced Micro Devices AMD64 Miscellaneous configuration (rev. 0x00)
pchb4 at pci0 dev 25 function 0
pchb4: Advanced Micro Devices AMD64 HyperTransport configuration (rev. 0x00)
pchb5 at pci0 dev 25 function 1
pchb5: Advanced Micro Devices AMD64 Address Map configuration (rev. 0x00)
pchb6 at pci0 dev 25 function 2
pchb6: Advanced Micro Devices AMD64 DRAM configuration (rev. 0x00)
pchb7 at pci0 dev 25 function 3
pchb7: Advanced Micro Devices AMD64 Miscellaneous configuration (rev. 0x00)
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
lm0 at isa0 port 0x290-0x297: W83627HF
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
ioapic2: enabling
ioapic1: enabling
ioapic0: enabling
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
Kernelized RAIDframe activated
wd0 at atabus0 drive 1: <ST3200822A>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 186 GB, 387621 cyl, 16 head, 63 sec, 512 bytes/sect x 390721968 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd0(viaide0:0:1): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using DMA data 
transfers)
atapibus0 at atabus1: 2 targets
cd0 at atapibus0 drive 1: <SONY    CD-RW  CRX320E, , NYK5> cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
wd1 at atabus1 drive 0: <HDS722516VLAT80>
wd1: drive supports 16-sector PIO transfers, LBA48 addressing
wd1: 153 GB, 319120 cyl, 16 head, 63 sec, 512 bytes/sect x 321672960 sectors
wd1: 32-bit data port
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd1(viaide0:1:0): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using DMA data 
transfers)
cd0(viaide0:1:1): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data 
transfers)
boot device: wd1
root on wd1a dumps on wd1b
root file system type: ffs
cpu1: CPU 1 running
cpu2: CPU 2 running
cpu3: CPU 3 running
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)

Thanks,
chris