Does anyone else poll this router with SNMP?

We are using firmware version: 2.0.0.19-tz

We are having problems with the traffic counters, some of them appear to be implemented as 16 bit counter instead of 32 bit counters. The reason this is causing problems is that they roll over (at 65,000) to 0 in less than our minute polling cycle, really skewing our metrics.

The counter for the Lan (interface 2) seems to be functioning properly, however interfaces 3 and 4 (WAN and DMZ / WAN2) rollover at 65000.

Tue May 11 08:38:31 EDT 2010
IF-MIB::ifInOctets.1 = Counter32: 137634
IF-MIB::ifInOctets.2 = Counter32: 1865677943
IF-MIB::ifInOctets.3 = Counter32: 12450
IF-MIB::ifInOctets.4 = Counter32: 49354

Look at counter IF-MIB::ifInOctets.4 5 seconds later:

Tue May 11 08:38:36 EDT 2010
IF-MIB::ifInOctets.1 = Counter32: 137634
IF-MIB::ifInOctets.2 = Counter32: 1865836207
IF-MIB::ifInOctets.3 = Counter32: 13167
IF-MIB::ifInOctets.4 = Counter32: 12900

Any suggestions? Seems like a bug to me, however I just wanted to make sure I wasn't crazy..

Thanks!