ok button not working on custom protocol open

[Willem Mulder]

Binary package hint: firefox-3.0

I've just added a protocol to firefox in about:config (as described at http://kb.mozillazine.org/Register_protocol), but when I try to open such a link, the OK button on the confirm dialog doesn't work. When i set it to auto-start, it won't execute at all.

Ubuntu Intrepid 8.10
Firefox 3.0.8 (3.0.8+nobinonly-0ubuntu0.8.10.2)

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
Package: firefox-3.0 3.0.8+nobinonly-0ubuntu0.8.10.2
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.27-11-generic i686