Version 3.6 adds Wi-Fi frequency (MHz) to the results screen, collected from ScanResult Android class. This class also can be used to retrieve dBm, so I decided to get signal strength from this class rather than from the old way. It did not seem to make any difference in my testing.
The code seems very stable, but the database change I made to store frequency might cause errors in your AirYarde install. The short story is that I had to make changes to the database but did want to write an upgrade database code at this time. You will have to uninstall and reinstall from the Android market.