This problem is solved.
First I used the command "nice -n 0 firefox ........" to force the launcher in
an other file.
Next I removed all the %2525...3B.desktop files.
And the gnome-panel was updated.
Result: the problem is gone.
** Changed in: gnome-panel (Ubuntu)
Status: New => Fix Released
--
Multiple firefox launchers on panels get mixed up
https://bugs.launchpad.net/bugs/155472
You received this bug notification because you are a member of Ubuntu
Bugs, which is the bug contact for Ubuntu.
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs