[c-nsp] queue drops on interfaces possibly explained by autonegotiate ?

[Rogelio]

I'm comparing two similarly configured Cisco 7201 routers and trying to 
figure out why one (with few L2TP tunnels) is getting more queue drops 
than another (with many L2TP tunnels).

The only difference I see is that one router (with fewer tunnels and 
lots of queue drops) has autonegotiate on his interfaces.

Could that explain the queue drops?  Or should I be looking elsewhere?