Ovi Maps on the web DOES work on Windows/Firefox but only in FireFox 3.0. In order to work correctly Nokia in their infinite wisdom created a plugin that only works on Mac and Windows and while Mozilla was busy updating to Firefox 3.5, which wasn't a secret, Nokia ignored this development and failed to update their plugin to work with 3.5. Get on the ball Nokia!! I've had to downgrade all my Firefox installs to v3.0.13 to get Ovi Maps to work on my PC again.