I wouldn't be suprised with anything to do with EM data transfer. I proberly was talking bollocks about the snow. But the whole thing with troubleshooting Wifi is it has so many variables that can effect it.
If you fixed a wired network problem before and got something working normally if the same problem came up again you were 99% certain all you had to do was your original fix and away you went.
Not so with Wifi in my experence.