you can only purchase a song if you click "checkout" very fast

[Ken VanDine]

Binary package hint: rhythmbox-ubuntuone-music-store

There appears to be a problem with our parsing of the html or the javascript that gets injected into the webview. When purchasing a song, if you let the page completely render before clicking checkout you get redirected to the unregistered user page.

If you click on the checkout button immediately when it is shown, it works as designed.

[Stuart Langridge (sil)]

I believe this is a server problem at the provider. We pass a custom user agent for the webkit widget. The server doesn't recognise that agent, and so doesn't insert __doPostback JavaScript. The page unconditionally relies on that JavaScript being there, though.