niu: eth0: Transmit timed out, resetting

Hi,

we have installed Scientific Linux 6.1 (Kernel
2.6.32-131.12.1.el6.x86_64) on a server with a Sun Neptune 10g card.
Shortly after transmitting data we get the error

niu: eth0: Transmit timed out, resetting

and the system stops to respond. This behaviour was already reported
before on this list and I was wondering if there is a fix available.

Thank you,
Hans Schnitzer