Comment 256 for bug 621265

I have been affected by this bug too, but you guys realy have to consider faulty routers. Bring your laptop to a different AP and try if this is the reason.

Lot's of routers are equipped with linux firmeware these days and as a laptop driver may be affected, as much a router may be the reason too.

There have been some very strange bugs with Linux wifi implementations, where both a faulty router firmware and a faulty laptop firmeware added up to a working combination. As the laptop got a new kernel with _fixed_ WIFI stack, the line ceased working, lost speed, couldn't assign an IP and many other quirks.