rpcinfo blank output

[Tapas Mishra]

 program vers proto   port
    100000    2   tcp    111  portmapper
    100000    2   udp    111  portmapper
    100024    1   udp  48718  status
    100024    1   tcp  38592  status
    100021    1   udp  53256  nlockmgr
    100021    3   udp  53256  nlockmgr
    100021    4   udp  53256  nlockmgr
    100021    1   tcp  52368  nlockmgr
    100021    3   tcp  52368  nlockmgr
    100021    4   tcp  52368  nlockmgr
    100003    2   tcp   2049  nfs
    100003    3   tcp   2049  nfs
    100003    4   tcp   2049  nfs
    100227    2   tcp   2049
    100227    3   tcp   2049
    100003    2   udp   2049  nfs
    100003    3   udp   2049  nfs
    100003    4   udp   2049  nfs
    100227    2   udp   2049
    100227    3   udp   2049
    100005    1   udp  39840  mountd
    100005    1   tcp  36081  mountd
    100005    2   udp  39840  mountd
    100005    2   tcp  36081  mountd
    100005    3   udp  39840  mountd
    100005    3   tcp  36081  mountd

in the above output of rpcinfo I see a few lines blank this output is
coming on my laptop.
Is this normal or some thing to worry about?