pflow all traffic in a queue

[Andy]

Hi,

I have an issue where one of my 'real-time' queues is much busier than 
it should be. I suspect that someone is running something on the network 
and setting the diffserv bits (or something else funky..) and so the 
firewall is placing the traffic into the higher priority queue which is 
screwing with our VoIP traffic :(

Does anyone know of how I can view the pflow or even just the states for 
/all/ traffic in just one queue?

Thanks in advance, Andy.