What a waste of power. On N900, you can set desired time between auto-scans manually, since on vanilla Maemo times. Even on my mother's device (where she have VoIP set, to always available, so colnnecting to WiFi when possible is essential), I have set it up to scan every 15 minutes. Scanning whole range of channels every 5 minutes is nice overkill for standby time.

/Estel