Default browser in XFCE4

In Fedora 16 some applications fail to launch the default browser set in Default Applications. I use Google Chrome as my default browser and having Firefox pop-up unexpectedly has been an annoying shortcoming. Today I had finally time to actually get to the bottom of this. Seems like

/usr/local/share/applications/defaults.list

is the culprit. After editing the file by switching the order of appeareances so that chrome is listed first I can finally have my preferred browser present me with teh Internets

[Default Applications]
x-scheme-handler/http=google-chrome.desktop;mozilla-firefox.desktop
x-scheme-handler/https=google-chrome.desktop;mozilla-firefox.desktop
x-scheme-handler/ftp=google-chrome.desktop
text/html=google-chrome.desktop;mozilla-firefox.desktop
text/xml=google-chrome.desktop
application/xhtml_xml=google-chrome.desktop

edit. This problem is present in Fedora 17 as well