Hm, I disabled WPA on our wifi router, and I can ping the N9 now, so it looks like I must have encryption misconfigured, either on our router or on the N9. I'll look at that some more, but encryption has been working fine for all the rest of our hosts and devices.

I'm also getting "security certificate not trusted" popups for google... I seem to be able to get to some websites now, but not others from the N9. I can get to anything on the internet fine from our PCs... hm puzzling!

I'd like to resolve this because the N9 seems like an awesome phone, and I'd like to play with Qt development on it too! :-)