Poor network transfer performance

Hello, I am using FreeBSD 7.0-CURRENT and I csuped my sources yesterday 
and built a GENERIC i386 kernel but with all the WITNESS and debug 
options commented out. The problem I am having is that I get very slow 
transfer rates when transferring data to this machine; so far the 
methods I have used are scp and SMB/CIFS using samba. During this 
transfer I get the following error message on the console: 'vr0 watchdog 
timeout'. My dmesg output is below:

FreeBSD 7.0-CURRENT #0: Sat May  5 23:31:13 BST 2007
    root_at_:/usr/obj/usr/src/sys/BACKUP-KERNEL
ACPI APIC Table: <AMIINT VIA_K7  >
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(tm) XP 2000+ (1666.73-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0x6a0  Stepping = 0
  
Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
  AMD Features=0xc0400800<SYSCALL,MMX+,3DNow!+,3DNow!>
real memory  = 1073676288 (1023 MB)
avail memory = 1041485824 (993 MB)
ioapic0 <Version 0.3> irqs 0-23 on motherboard
kbd1 at kbdmux0
ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
acpi0: <AMIINT VIA_K7> on motherboard
acpi0: [ITHREAD]
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <VIA 8377 (Apollo KT400/KT400A/KT600) host to PCI bridge> on hostb0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
vgapci0: <VGA-compatible display> mem 
0xde000000-0xdeffffff,0xd0000000-0xd7ffffff irq 16 at device 0.0 on pci1
uhci0: <VIA 83C572 USB controller> port 0xe400-0xe41f irq 21 at device 
16.0 on pci0
uhci0: [GIANT-LOCKED]
uhci0: [ITHREAD]
usb0: <VIA 83C572 USB controller> on uhci0
usb0: USB revision 1.0
uhub0: <VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0
uhub0: 2 ports with 2 removable, self powered
uhci1: <VIA 83C572 USB controller> port 0xe800-0xe81f irq 21 at device 
16.1 on pci0
uhci1: [GIANT-LOCKED]
uhci1: [ITHREAD]
usb1: <VIA 83C572 USB controller> on uhci1
usb1: USB revision 1.0
uhub1: <VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb1
uhub1: 2 ports with 2 removable, self powered
uhci2: <VIA 83C572 USB controller> port 0xec00-0xec1f irq 21 at device 
16.2 on pci0
uhci2: [GIANT-LOCKED]
uhci2: [ITHREAD]
usb2: <VIA 83C572 USB controller> on uhci2
usb2: USB revision 1.0
uhub2: <VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb2
uhub2: 2 ports with 2 removable, self powered
ehci0: <VIA VT6202 USB 2.0 controller> mem 0xdfffff00-0xdfffffff irq 21 
at device 16.3 on pci0
ehci0: [GIANT-LOCKED]
ehci0: [ITHREAD]
usb3: EHCI version 1.0
usb3: companion controllers, 2 ports each: usb0 usb1 usb2
usb3: <VIA VT6202 USB 2.0 controller> on ehci0
usb3: USB revision 2.0
uhub3: <VIA EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb3
uhub3: 6 ports with 6 removable, self powered
isab0: <PCI-ISA bridge> at device 17.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <VIA 8235 UDMA133 controller> port 
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xfc00-0xfc0f at device 17.1 on pci0
ata0: <ATA channel 0> on atapci0
ata0: [ITHREAD]
ata1: <ATA channel 1> on atapci0
ata1: [ITHREAD]
pci0: <multimedia, audio> at device 17.5 (no driver attached)
vr0: <VIA VT6102 Rhine II 10/100BaseTX> port 0xdc00-0xdcff mem 
0xdffffe00-0xdffffeff irq 23 at device 18.0 on pci0
vr0: Quirks: 0x0
miibus0: <MII bus> on vr0
ukphy0: <Generic IEEE 802.3u media interface> PHY 1 on miibus0
ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
vr0: using obsoleted if_watchdog interface
vr0: Ethernet address: 00:0c:76:41:01:a3
vr0: [ITHREAD]
acpi_button1: <Sleep Button> on acpi0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
atkbd0: [ITHREAD]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: [ITHREAD]
psm0: model IntelliMouse Explorer, device ID 4
fdc0: <floppy drive controller> port 0x3f2-0x3f3,0x3f4-0x3f5,0x3f7 irq 6 
drq 2 on acpi0
fdc0: [FILTER]
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on 
acpi0
sio0: type 16550A
sio0: [FILTER]
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
sio1: [FILTER]
pmtimer0 on isa0
orm0: <ISA Option ROM> at iomem 0xc0000-0xcafff pnpid ORM0000 on isa0
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/9 bytes threshold
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
ppc0: [GIANT-LOCKED]
ppc0: [ITHREAD]
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
Timecounter "TSC" frequency 1666734330 Hz quality 800
Timecounters tick every 1.000 msec
ad0: 117246MB <Maxtor 6Y120L0 YAR41BW0> at ata0-master UDMA133
acd0: DVDR <PIONEER DVD-RW DVR-111D/1.23> at ata0-slave UDMA66
Trying to mount root from ufs:/dev/ad0s1a
WARNING: ZFS is considered to be an experimental feature in FreeBSD.
ZFS filesystem version 6
ZFS storage pool version 6