After the latest AIX 4.2.1 fixes are installed, Netscape does not start. The error message resembles the following:
Could not load program netscape_aix4 Symbol snprintf in /usr/lib/libX11.a is undefined Could not load library libXt.a[shr4.o] Error was: Exec format error
        cd /NETSCAPE_DIRECTORY/lib42
        mv libc.a libc.a.old
      /NETSCAPE_DIRECTORY is the directory in which Netscape
      Navigator or Communicator is installed.
        compress -dc /DOWNLOAD_DIRECTORY/nav_lib42.tar.Z | tar -xvf-
      /DOWNLOAD_DIRECTORY is the directory to which the
      nav_lib42.tar.Z file was downloaded.