I contatori del Performance Monitor ora sono a 64 bit... 
I have been testing my 64-bit MSMQ 3.0 server by chucking 1,000s of large messages at it to see how well it responds. I did have Performance Monitor running, showing "Total messages in all queues" and "Total bytes in all queues" for the MSMQ service. I would come back to the screen every now and then and think - "strange, there's less messages than there was 10 minutes ago." - but n ot having the time to investigate, I shrugged and left it. Today I came to purge the queue and saw the attached Performance...(read more)
Fonte: Performance Monitor has trouble showing over 4GB of MSMQ messages.