Diagnostic:
on the HP-UX box:
tail -f /var/adm/syslog/syslog.log
attempt a connection from Solaris see what the messaging is.
do the Solaris equivalent which I don't know.
make sure permissions on the .rhosts file are valid. Check the contents of /etc/hosts.equiv for compatability issues.
Have you tried + in the rhosts files just as a test? That sometimes works.
SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com