Comment 62 for bug 425455

To be adding more info: sometimes "restart network-manager" does not work and I need to unload/reload the two kernel modules iwl3945 and iwlcore so that I can get a connection again.

It seems to be most prone to crash when the signal strength is < 60% and when there are many outgoing connections at the same time, e.g. bittorrent traffic or internet surfing. It's actually (almost) stable when there are few connections, such as a single download by wget. I suppose that could lead to testing of some sort...