It is nice that Zimbra Desktop has this Applications Preference feature now and it works once set (i.e. use Firefox for URLs) but the preferences don't stick. Once I close ZD and re-open it I have to set the prefs again. Rather annoying.
I'm running Ubuntu Desktop 10.04 x86_64. The progress on ZD is coming along quite nicely though so kudos to the dev team.
- Clayton Dillard