Peter Weilbacher, who is the current builder of official Mozilla for OS/2 releases, reports that any problem reports concerning the Mozilla based applications for (FireFox, Thunderbird, SeaMonkey and others) should be entered at https://bugzilla.mozilla.org
"Problem posts to the newsgroup get forgotten and are hardly ever fixed. For my enhanced products I take care to log them but for the official releases they should go directly into Bugzilla."
If you just have a question or a comment about these applications or just want to participate in a discussion on them then use the News group news://news.mozilla.org/mozilla.dev.ports.os2