I am supporting an application built inhouse (the developer is no longer with the company). Data is accessed through a web front end, from a 3rd party document storage application. This is done via MSMQ. I am seeing that when transacations are queued in MSMQ private queues, the CPU utilization jumps to 100%. As soon as these transactions are processed, the CPU drops back down to an acceptable level. Note, in case this is important, we are running Windows 2000 Server. Any ideas?