XEN Problem with Broadcom NetXtrem BCM5721 (tg3 module)

Hallo All,

i have a problem with running xen in combination of my onboard gigabit ethernet card.

opensuse 11.1
xen-kernel 2.6.27.19-3.2-xen
Network card Broadcom NetXtrem BCM 5721
Network Module tg3

I start my server in dom0 without starting any domU machine.

When I now try to make a scp first my traffic goes down to stalled. Next i lose keyboard an mouse interaction. The System is frozen.
I can only make a hardware reset.

On a test with an old 100 Mbit Etherncard works, the same system works fine. But i will run my system with the onboard gigabit cards.

It looks like a problem with the tg3 in combination of the suse xen kernel. Is it a general problem of xen or a special problem of the suse xen-kernel??

Can anyone help me or have a good idear to fix the problem?

kind regards
andi