star warnings about ACLs and sockets

I am trying to do a filesystem copy using star 1.4.3 on Solaris 8 with
the following command:

time ( /opt/local/bin/star -c -acl . | ( cd /dest && /opt/local/bin/star \
-x -v -acl ) ) > /var/tmp/tar.log 2>/var/tmp/tar-error.log

/var/tmp/tar-error.log has many messages like this:

/opt/local/bin/star: Invalid argument. Cannot set ACL 'user' for
'ak/.mozilla/firefox/default.fpf/extensions/'.

This file doesn't seem to use any ACLs besides unix file permissions.
Should I be worried about these errors?

Also, I see errors like:

/opt/local/bin/star: 'b/-h' unsupported file type 'socket'. Not dumped.

What options should I use to make sure that sockets (and as many other
file types and file attributes as possible) are preserved?

-akop