I'm at a place where there's no internet, so I hooked up my T-Mobile G1 (an HTC Dream) to my laptop through the PdaNet app.

When I was browsing a site, I noticed an image that wasn't working. So I opened it up in a new tab, where it seemed to work again, but I then noticed the URL. The http:// part of the original source was dropped and replaced by http://1.2.3.12/bmi/, i.e.: http://1.2.3.9/bmi/www.gerbenjacobs.nl/wp-content/uploads/2011/01/cute-kitten-laughing-64x64.jpg