Filesystems not unmounting properly

HI all,

I just upgraded to 5.2 from 5.1 and it seems my filesystems are not  
unmounting properly.

Here is my dmesg.  I don't want to damage my filesystem, anyone have  
any clues what might be causing this?

cooper:~$ dmesg
Copyright (c) 1992-2004 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 5.2-RELEASE #0: Thu Jan 22 17:04:38 EST 2004
     david_at_cooper.wesleyan.edu:/usr/obj/usr/src/sys/COOPER
Preloaded elf kernel "/boot/kernel/kernel" at 0xc08a5000.
Preloaded elf module "/boot/kernel/acpi.ko" at 0xc08a51f4.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2392.25-MHz 686-class CPU)
   Origin = "GenuineIntel"  Id = 0xf27  Stepping = 7
    
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>
   Hyperthreading: 2 logical CPUs
real memory  = 4026466304 (3839 MB)
avail memory = 3913224192 (3731 MB)
ACPI APIC Table: <DELL   PE2650  >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
  cpu0 (BSP): APIC ID:  0
  cpu1 (AP): APIC ID:  1
  cpu2 (AP): APIC ID:  2
  cpu3 (AP): APIC ID:  3
ioapic0: Changing APIC ID to 4
ioapic1: Changing APIC ID to 5
ioapic2: Changing APIC ID to 6
ioapic0 <Version 1.1> irqs 0-15 on motherboard
ioapic1 <Version 1.1> irqs 16-31 on motherboard
ioapic2 <Version 1.1> irqs 32-47 on motherboard
Pentium Pro MTRR support enabled
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <DELL   PE2650  > on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000
pcibios: BIOS version 2.10
Using $PIR table, 9 entries at 0xc00fc480
acpi_timer0: <32-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
acpi_cpu0: <CPU> on acpi0
acpi_cpu1: <CPU> on acpi0
acpi_cpu2: <CPU> on acpi0
acpi_cpu3: <CPU> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib0: slot 15 INTA is routed to irq 5
pci0: <unknown> at device 4.0 (no driver attached)
pci0: <unknown> at device 4.1 (no driver attached)
pci0: <unknown> at device 4.2 (no driver attached)
pci0: <display, VGA> at device 14.0 (no driver attached)
atapci0: <ServerWorks CSB5 UDMA100 controller> port  
0x8b0-0x8bf,0x8d8-0x8db,0x8d0-0x8d7,0x8c8-0x8cb,0x8c0-0x8c7 at device  
15.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata0: [MPSAFE]
ata1: simplex device, DMA on primary only
ata1: at 0x170 irq 15 on atapci0
ata1: [MPSAFE]
ohci0: <OHCI (generic) USB controller> mem 0xfe100000-0xfe100fff irq 5  
at device 15.2 on pci0
usb0: OHCI version 1.0, legacy support
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: (0x1166) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 4 ports with 4 removable, self powered
isab0: <PCI-ISA bridge> at device 15.3 on pci0
isa0: <ISA bus> on isab0
pcib1: <ACPI Host-PCI bridge> on acpi0
pci4: <ACPI PCI bus> on pcib1
pcib2: <ACPI PCI-PCI bridge> at device 8.0 on pci4
pci5: <ACPI PCI bus> on pcib2
pci5: <mass storage, SCSI> at device 6.0 (no driver attached)
pci5: <mass storage, SCSI> at device 6.1 (no driver attached)
aac0: <Dell PERC 3/Di> mem 0xf0000000-0xf7ffffff irq 30 at device 8.1  
on pci4
aac0: [MPSAFE]
aac0: i960RX 100MHz, 118MB cache memory, optional battery present
aac0: Kernel 2.7-1, Build 3170, S/N 7041d3
aac0: Supported  
Options=75c<WCACHE,DATA64,HOSTTIME,WINDOW4GB,SOFTERR,NORECOND,SGMAP64>
pcib3: <ACPI Host-PCI bridge> on acpi0
pci3: <ACPI PCI bus> on pcib3
bge0: <Broadcom BCM5701 Gigabit Ethernet, ASIC rev. 0x105> mem  
0xfcf10000-0xfcf1ffff irq 28 at device 6.0 on pci3
bge0: Ethernet address: 00:06:5b:fe:53:81
miibus0: <MII bus> on bge0
brgphy0: <BCM5701 10/100/1000baseTX PHY> on miibus0
brgphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,  
1000baseTX-FDX, auto
bge1: <Broadcom BCM5701 Gigabit Ethernet, ASIC rev. 0x105> mem  
0xfcf00000-0xfcf0ffff irq 29 at device 8.0 on pci3
bge1: Ethernet address: 00:06:5b:fe:53:82
miibus1: <MII bus> on bge1
brgphy1: <BCM5701 10/100/1000baseTX PHY> on miibus1
brgphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,  
1000baseTX-FDX, auto
pcib4: <ACPI Host-PCI bridge> on acpi0
pci2: <ACPI PCI bus> on pcib4
pcib5: <ACPI Host-PCI bridge> on acpi0
pci1: <ACPI PCI bus> on pcib5
fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> port  
0x3f7,0x3f0-0x3f5 irq 6 drq 2 on acpi0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model IntelliMouse Explorer, device ID 4
sio0 port 0x3f8-0x3ff irq 4 on acpi0
sio0: type 16550A
sio1 port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
orm0: <Option ROMs> at iomem  
0xec000-0xeffff,0xc8000-0xcbfff,0xc0000-0xc7fff on isa0
pmtimer0 on isa0
ppc0: parallel port not found.
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on  
isa0
Timecounters tick every 10.000 msec
acd0: CDROM <TEAC CD-ROM CD-224E> at ata0-master PIO4
aacd0: <RAID 1 (Mirror)> on aac0
aacd0: 139998MB (286716672 sectors)
GEOM: create disk aacd0 dp=0xcaf77a0c
aacd1: <RAID 1 (Mirror)> on aac0
aacd1: 139998MB (286716672 sectors)
GEOM: create disk aacd1 dp=0xcaf77b0c
SMP: AP CPU #3 Launched!
SMP: AP CPU #1 Launched!
SMP: AP CPU #2 Launched!
Mounting root from ufs:/dev/aacd0s2a
WARNING: /usr was not properly dismounted
WARNING: /var was not properly dismounted
WARNING: /www was not properly dismounted
pid 51912 (conftest), uid 0: exited on signal 12 (core dumped)
cooper:~$