Tesco UK is now offering PC's preloaded with Ubuntu
Here's the slides.
Unfortunately slideshare doesn't support animations so the callouts on the slides all show at once.
Click here for the sample application code
I mentioned before about the lack of security in eircom's wifi solution. They use to have a single WEP key for all routers by default.
Now, the key is generated at installation but they've been really dumb in how they do it. James Galvin blogged about it and it was picked up by Damien. Paul Dolan put a page together to generate the key.