[NFS] Portmapper problem, no access the server after update to debian squeeze

["calculix-BGeptl67XyCzQB+pC5nmwQ@public.gmane.org" <calculix-BGeptl67XyCzQB+pC5nmwQ@public.gmane.org>]

Dear NFS-Team,
Since I updated my server from Debian-Lenny to Squeeze I am not able 
anymore to mount, ssh, etc to my server.  I have gone through the 
nfs-howto, followed the troubleshouting process with no success.
I can reach the server with ping without any problems. Only mount, ssh, 
sftp etc. does not work. My portmapper seams not to allow the access.

Please help!

Thanks
Peter

******** Here is my /etc/exports
# /etc/exports: the access control list for filesystems which may be 
exported
#               to NFS clients.  See exports(5).
#
# Example for NFSv2 and NFSv3:
# /srv/homes       hostname1(rw,sync,no_subtree_check) 
hostname2(ro,sync,no_subtree_check)
#
# Example for NFSv4:
# /srv/nfs4        gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check)
# /srv/nfs4/homes  gss/krb5i(rw,sync,no_subtree_check)
#
/data/PUBLIC    192.168.178.27(rw,sync,no_subtree_check)
******** End of /etc/exports

******** Here is my /etc/hosts.allow
# /etc/hosts.allow: list of hosts that are allowed to access the system.
#                   See the manual pages hosts_access(5) and 
hosts_options(5).
#
# Example:    ALL: LOCAL @some_netgroup
#             ALL: .foobar.edu EXCEPT terminalserver.foobar.edu
#
# If you're going to protect the portmapper use the name "portmap" for the
# daemon name. Remember that you can only use the keyword "ALL" and IP
# addresses (NOT host or domain names) for the portmapper, as well as for
# rpc.mountd (the NFS mount daemon). See portmap(8) and rpc.mountd(8)
# for further information.
#
ALL:192.168.178.0/255.255.255.0(rw,sync)
******** End of /etc/hosts.allow

******** My /etc/hosts.deny is empty

******** Here is the output of rpcinfo -p localhost from the server
   Program Vers Proto   Port
    100000    2   tcp    111  portmapper
    100000    2   udp    111  portmapper
    100024    1   udp  59341  status
    100024    1   tcp  52100  status
    100021    1   udp  43350  nlockmgr
    100021    3   udp  43350  nlockmgr
    100021    4   udp  43350  nlockmgr
    100021    1   tcp  56947  nlockmgr
    100021    3   tcp  56947  nlockmgr
    100021    4   tcp  56947  nlockmgr
    100003    2   tcp   2049  nfs
    100003    3   tcp   2049  nfs
    100003    4   tcp   2049  nfs
    100003    2   udp   2049  nfs
    100003    3   udp   2049  nfs
    100003    4   udp   2049  nfs
    100005    1   udp  51709  mountd
    100005    1   tcp  36097  mountd
    100005    2   udp  51709  mountd
    100005    2   tcp  36097  mountd
    100005    3   udp  51709  mountd
    100005    3   tcp  36097  mountd
******* End of rpcinfo -p localhost

******* Here is the output of rpcinfo -p 192.168.178.32 from the client
rpcinfo: Portmapper kann nicht erreicht werden: RPC: Fehler des 
entfernten Systems - Verbindungsaufbau abgelehnt
******* This seams to be my problem, but what to do?

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