Netscape-smotif-4.08 is the only reliable version I've found. I too can confirm the $ rm ~/.netscape method of temporarily fixing netscape-4.61 hangs (or whatever). But the most successful fix at the moment is $ dpkg --remove nestcape-smotif-4.6.1. ;-)
-- Eric G. Miller Powered by the POTATO (http://www.debian.org)!