Good news! Mozilla 1.0rc2 binary is now available for
downloading from openqnx site.
I got many requests for mozilla for QNX 6.1. Looks like
nobody cares about those using existing/old QNX 6.1 release 
I have two versions on openqnx site: one for xfree86 users, the
other for the photon users.
https://sourceforge.net/project/showfiles.php?group_id=21249
Questions can be posted to the mailing list:
http://lists.sourceforge.net/lists/listinfo/openqnx-developer
where you can also browse the list archives.
Frank