This morning my N900 had the same problem again. It could not find my home WiFi connection. I would suspect it has something to do with battery draining. Is there something that can be done through xterm when N900 fails to find an existing WiFi signal, without having to reboot? Is there a wifi related service I could try to restart to get this working or some way to check wifi module status? I'll try to find out how to reproduce this wifi issue... I messed up here. I meant "in idle condition". No data connection.