My WiFi bug...? Not sure I have one... Or do you mean the WiFi timeout issue - it could be due to that I suppose.

Assuming it's not due to the timeout issue, I think it needs to be fully diagnosed by Nokia, but since this is most likely an environmental problem specific to the owners it may be impossible for Nokia to reproduce (at least without further info).

By opening a bug in Bugzilla I would hope (naiively) that Nokia would ask relevant questions of the reporters, perhaps asking them to execute various WiFi commands in xterm which may pin point where the problem lies. I did just this with Johan Hedberg in bug #865 and we identified the problem with Bluetooth and had it fixed in a later firmware. A much more satisfying conclusion than returning my N800 for a refund, and one which also may have benefited other users too!