Hi,I've got the same problem in XChat. It uses the symlink in /etc/alternatives which is:
/etc/alternatives/x-www-browser -> /usr/bin/iceweasel
With the new dfsg.3 package I get an error if I will open a URL in XChat and Iceweasel is already running:
Firefox is already running but it's not responding. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

