Help needed!! Why do I keep losing the connection to my cRIO?

Hi All,
I've got a real time system with the following setup.
I have got a cRIO out in the field running a real time application that accquires data from various thermocouples and sends the data to the my host computer over a wireless radio link. I am using a wireless ethernet modem with a data transfer rate of 100 kb/sec. The modem is being shared by 12 other radios also transmitting data to the host PC.
So, basically, I've got the host PC on one end and 13 field computers (one of which is my cRIO running a real-time application) on the other end. The 13 field computers are sending data to the host PC over wireless radio links utilizing a single wireless ethernet modem. The data from the 13 radios is placed on a que and the modem cycles through the que enabling the data from each radio to pass through one at a time.
My real time application is sampling the thermocouple data every 1 sec and sending it across to the host application via a shared variable
The host PC is also running an application that acts as the user interface.
My problem is this:
My system runs OK for a couple of minutes and then suddenly I lose the conection to the cRIO. Once this happens, I have to manually reset the cRIO (i.e. cycle the power back on) to re-establish the connection. This is both tiresome and inconvenient as the system needs to be able to run continuously for several hrs.
What could be the possible causes for this loss in connection? Is it possible that a clash between signals causes the modem to drop the connection to the cRIO? If so, is there a way to monitor the connection between the host and cRIO and automatically reset the cRIO in the event of a lost connection?
Any help would be highly appreciated.
Thanks,
Taizoon

Thanks for the suggestions. I think I was overflowing my FIFO so it may be a memory issue. However, it dies hard when I place a probe on my FIFO read data. Since this seems to be repeatable, NI may be able to look into it.
Anyways, I'll try some of my own troubleshooting and your suggestions then if I'm still having problems I'll be sure to check back.
CLA, LabVIEW Versions 2010-2013

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Help needed!! Why do I keep losing the connection to my cRIO?

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