how to trace vi session and RM session and see what is currently opened

Hi,

I am troubleshooting a problem between LabView and an instrument driver.  From the NI Spy, we see several RM session opened and several VI session opened to communicate to the instrument driver.  Anyhow, what troubles us is that, intermittently, NI Spy would capture a call to viOpenDefaultRM() function and there is no corresponding viClose().  Also, assuming if everything opened and closed properly, I won't expect the value of the RM session handle and the value of the VI session handle would change, but, intermittently, the handle value would change and is going up. 

So, to further troubleshoot, I am wondering is there a tool that I can monitor, in real time, shows me a list of RM session opened and list of VI session opened.

Thanks.

Peggy