Kernel Dump when accessing Network after Update

I have a massive Problem after an Update on December 21.

Dell Poweredge R320 with 1 Xeon 2.2GHz E5-2407, 8GB Ram,
Intel Ethernet X540 DP 10GBASE-T Server Adapter
SLES 11 SP2 standard installation +KDE +Server

I installed the Computer mid November With SLES11 SP2 and updated. No Problem.

On 21. December I Updated again and after that every Network access produces a Kernel Dump - reboot.

When I re-install native Sles11 SP2 the System works, but after first Update it crashes again.

Who can help ?

Thanks, Achim

When i remove the Intel 10gBASE-T Card (fresh SP2 install), there is no Problem after the Update. ???