I found one fix (Score 1)

I was plagued for the longest time by the mail reference links i.e. mail yourself a message and reply to it. in the reply if you clicked on the [1] netscape would bomb. This was on sparc solaris 2.5.1, 2.6 with netscape 4.5.1, 4.6.1 but now on 4.7 those references work.