Bug: Relative urls in atom content are handled improperly

[dsmitchell1]

Steps to reproduce:

1. Subscribe to an atom feed that contains links to relative urls in the content. (for example, a GitHub public activity feed, like https://github.com/david-mitchell.atom)
2. Hover over one of the links in a feed item.

Expected result:

The status bar should show an absolute url with the same root as the atom feed. Clicking the link should take you to this location.

Actual result:

The status bar shows a file:// url. Clicking the link does nothing unless you happen to have a file at the specified location.

[planetmike]

This is still happening in 2.6.0.2601, and I think in the version3 beta as well. I don't remember it happening in the past, then again, I don't usually actually click on the URLs in my posts. The feed is: http://washingtondc.showbizradio.com/feed/ . Running under OS X 10.8.2, Vienna 2.6.0.2601. I don't see any Vienna preferences that look relevant to this issue.