Strange sudden shutdown issue with CF app

Hi,

We have created an app that basically connects to a web service gets data, then stores it locally on the device, and when a record needs to be modified/added the system first tries to connect the web server sees if its availible, if not then it stores in locally on the device until the connection comes back, now I noticed that if the device does not mess around with the data connection then the application sits nicely as long as its open, and never gets shut down (unless the system automatically shuts it down due to memory constraints).

However on devices that has a phone, and even more if the device is connected to an exchange server with push email and/or there are calls for a longer period of time, if you go back to the application afterword and while doing basically anything that worked before (before a lengthy call or so, don't know really what is causing but I've seen some indication that this might be the case) like a charm but now doing that same action will blow out the program, most of the times without any exception, and sometimes I would get NullReferenceException and the trace will show really basic internal trace, and everytime something else where the same action before worked just fine, and also note that those exceptions point no where to anything related to the connectivity of the device, but mostly front end stuff. But again most of the time I get no exception at all but just simply disappears.

It might be that there are some external native exception that is not being chought but am puzzled at where to start looking.

Hope someone might come up with some, as I'm puzzled and dont know where to focus on.

Regards and thanks in advance
Shloma

.

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