Search Function Stops Working

Every so often, DevonAgent Pro’s search function will not work with the number of items found remaining at zero regardless of how long I let the search continue.
To get it to work again, I have to reinstall DA Pro.
What could the problem be? Any other reports of this issue?
Addendum: After posting this I think that I MAY have discovered the reason for this issue; my wireless connection briefly quits every so often and possibly DevonAgent’s search ability is hindered during those periods.

That’s at least possible. Please have a look at the Log tab of the search window if this should happen again.