Any known issues with Chelsio 10G cards?

The same binary, same rule set that works on other servers, is producing a crazy amount of data in the weird.log, for example:

1266535212.661919 : truncated_IP

Yet nothing in any other log, regardless of what interface I am monitoring. Snort on the same box, watching the same interfaces, works fine.

The MTU is 9216, but the same happens at 1512 as well.

Also using PF_RING, but that isn’t unusual in my environment. Any help is appreciated - thanks!