So this is actually sort of hard to solve.

1) The list in gnome-default-application-properties doesn't specify which
browsers support startup notification.

2) gnome-vfs doesn't ever try to use startup notification for url handlers

Maybe we should have gnome-default-application-properties write out desktop
files and just include a link to it?

Then we can launch the desktop file and things should just work.

oh, moving to control-center

Based on the date this bug was created, it appears to have been reported
against rawhide during the development of a Fedora release that is no
longer maintained. In order to refocus our efforts as a project we are
flagging all of the open bugs for releases which are no longer
maintained. If this bug remains in NEEDINFO thirty (30) days from now,
we will automatically close it.

If you can reproduce this bug in a maintained Fedora version (7, 8, or
rawhide), please change this bug to the respective version and change
the status to ASSIGNED. (If you're unable to change the bug's version
or status, add a comment to the bug and someone will change it for you.)

Thanks for your help, and we apologize again that we haven't handled
these issues to this point.

The process we're following is outlined here:
http://fedoraproject.org/wiki/BugZappers/F9CleanUp

We will be following the process here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping to ensure this
doesn't happen again.

This bug has been in NEEDINFO for more than 30 days since feedback was
first requested. As a result we are closing it.

If you can reproduce this bug in the future against a maintained Fedora
version please feel free to reopen it against that version.

The process we're following is outlined here:
http://fedoraproject.org/wiki/BugZappers/F9CleanUp

(In reply to comment #1)
> So this is actually sort of hard to solve.
> 
> 1) The list in gnome-default-application-properties doesn't specify which
> browsers support startup notification.
> 
> 2) gnome-vfs doesn't ever try to use startup notification for url handlers
> 
> Maybe we should have gnome-default-application-properties write out desktop
> files and just include a link to it?

Or we should have .desktop files listed in the control-center, not actual
commands. And if people use custom commands, they won't have any startup
notification...

> Then we can launch the desktop file and things should just work.

Well, not really, but the GTK+ should fix this.

Changing version to '9' as part of upcoming Fedora 9 GA.
More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

I believe this works now that pretty much everything uses gtk_show_uri()