msk watchdog timeout

Hi,

Once again, I had the msk watchdog timeout problem under moderate load. I've
surveyed msk related posts before.
There are many reports and solutions, but they seems not help for me.

Whenever I try to get a FreeBSD iso file through ftp (transfer rate is about
3 MB/s), msk would be down. Some messages from dmesg are like:
msk0: watchdog timeout
msk0: link state changed to DOWN
msk0: link state changed to UP
mskc0: Tx descriptor error
mskc0: Tx descriptor error
msk0: watchdog timeout
msk0: link state changed to DOWN
msk0: link state changed to UP

I used FreeBSD 6.2-STABLE before, since there is some related patch for msk
at FreeBSD-Current (if_msk.c rev. 1.18). I upgrade to Current, but the
problem seems not solved. Certainly, I tried to add hw.msk.legacy_intr="1"
in /boot/loader.conf. Whether disabling  MSI or not, the problem is as
before. In order to avoid shared interrupt, I've also disabled USB device in
BIOS, but not help.

Could you please tell me how to solve this problem.
Thanks a lot

---
My host is Intel Core 2 Duo E6300 + Onboard Marvel 8056 Gigabit LAN
Controller (My MB is GA-965G-DS3 of Gigabyte,
http://www.gigabyte.com.tw/Products/Motherboard/Products_Spec.aspx?ClassValue=Motherboard&ProductID=2417&ProductName=GA-965G-DS3
)

uname:
7.0-CURRENT FreeBSD 7.0-CURRENT #2: Thu Sep 27 00:11:01 CST 2007
root_at_localhost:/usr/obj/usr/src/sys/SMP  i386

ifconfig:
msk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=9a<TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
        ether 00:16:e6:de:bf:ed
        inet x.x.x.x netmask 0xffffff00 broadcast x.x.x.x
        media: Ethernet autoselect (1000baseTX <full-duplex,flag2>)
        status: active

boot message:
msk0: <Marvell Technology Group Ltd. Yukon EC Ultra Id 0xb4 Rev 0x02> on
mskc0
msk0: Ethernet address: 00:16:e6:de:bf:ed
miibus0: <MII bus> on msk0
e1000phy0: <Marvell 88E1149 Gigabit PHY> PHY 0 on miibus0
e1000phy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX-FDX,
auto
mskc0: [ITHREAD]

vmstat -i:
interrupt                          total       rate
irq1: atkbd0                           6          0
irq6: fdc0                             1          0
irq14: ata0                        97074          0
irq15: ata1                          629          0
irq16: mskc0                      288008          1
irq19: atapci0+                     1522          0
cpu0: timer                    421587304       1922
cpu1: timer                    421586922       1922
Total                          843561466       3846


pciconf -lv:
mskc0_at_pci3:0:0: class=0x020000 card=0xe0001458 chip=0x436411ab rev=0x14
hdr=0x00
    vendor     = 'Marvell Semiconductor (Was: Galileo Technology Ltd)'
    class      = network
    subclass   = ethernet

--
Best Regards,
Kudo