The problem with launching smbd can be seen in /var/log/daemon when you try to access the SMB share:
Oct 30 15:31:18 melech smbd[18328]: [2007/10/30 15:31:18, 0] passdb/secrets.c:secrets_init(66) Oct 30 15:31:18 melech smbd[18328]: Failed to open /var/lib/samba/secrets.tdb Oct 30 15:31:18 melech smbd[18328]: [2007/10/30 15:31:18, 0] lib/messages.c:message_init(132) Oct 30 15:31:18 melech smbd[18328]: ERROR: Failed to initialise messages database
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