strange nfs problem

[tiktak]

I have exported some directories from our server, but after booting
both machines, I can't mount the exports (refused mount request:
no export entry).
I have edited hosts.allow and exports correctly, and the portmapper
is running on all machines; mountd and nfsd are running on the server.

AND: If I just start 'exportfs -a' on the server - everything works!
(Also when doing '/etc/init.d/nfs restart').

Why does it not work immediately after booting?? It should just
run /etc/init.d/nfs start and work, right? I don't want to ssh in and
lauch exportfs -a every time...

Thanks a gajillion in advance!
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