I'm having problems mounting filesystems from Solaris machines:

	/-1# /sbin/mount liasun3:/usr /mnt
	/-0# l /mnt
	ls: /mnt: Permission denied
	/-0# l
	ls: mnt: Permission denied
	total 1198
	-rw-r--r--   1 root  wheel      648 Jan 19 11:31 .cshrc
	-rw-r--r--   1 root  wheel      138 Nov 21 23:06 .profile
	drwxr-xr-x   2 root  wheel      512 Nov 21 22:02 altroot/
	drwxr-xr-x   5 root  wheel      512 Jan 25 11:09 amd/
	drwxr-xr-x   2 root  wheel      512 Nov 21 22:18 bin/
	-rw-r--r--   1 root  wheel    29296 Jan 16 17:36 boot
	drwxr-xr-x   3 root  wheel     7680 Jan 22 11:15 dev/
	drwxr-xr-x   3 root  wheel      512 Jan 24 09:54 emul/
	drwxr-xr-x   9 root  wheel     1536 Jan 24 18:05 etc/
	drwxrwxr-x   5 root  wheel      512 Jan 18 17:42 extern/
	dr-xr-xr-x   2 root  wheel      512 Jan 25 11:08 home/
	drwxrwxr-x   6 root  wheel      512 Jan 24 18:06 intern/
	drwxr-xr-x   2 root  wheel      512 Jan 18 18:03 lib/
	drwxr-xr-x   3 root  wheel      512 Jan 24 09:57 logiciels/
	dr-xr-xr-x   2 root  wheel      512 Jan 24 17:09 net/
	-rw-r--r--   1 root  wheel  1167631 Jan 16 17:34 netbsd
	dr-xr-xr-x   1 root  wheel      512 Jan 25 13:29 proc/
	drwxr-xr-x   2 root  wheel     1536 Nov 21 22:53 sbin/
	drwxrwxr-x   2 root  wheel      512 Jan 24 17:55 softs/
	lrwxr-xr-x   1 root  wheel       11 Jan 24 18:06 sys@ -> usr/src/sys
	drwxrwxrwt   3 root  wheel      512 Jan 25 02:00 tmp/
	drwxr-xr-x   2 root  wheel      512 Jan 24 18:07 users/
	drwxr-xr-x  14 root  wheel      512 Jan 19 15:32 usr/
	drwxr-xr-x  19 root  wheel      512 Jan 19 11:32 var/
	/-0#

liasun3 is running Solaris-2.4. And /usr is a partition that's exported with
the options: 

	/-0# exportfs
	-               /usr   ro   ""  
	/-0#

I have no problems mounting that partition from any other of our machines
(Solaris-2.4, Irix-5.3 and Irix-6.2).

Any idea ?


	Stefan