DB Errors

[Patrick Nelson]

RH9 w/ cyrus-imap 2.1.13 and cyrus-sasl-2.1.13 using sasl to connect to
a ldap server.

Have system installed but am seeing a error... Not sure what to do.

When I start cyrus-imap it appears that all is well, but I get messages
in my /var/log/messages log that are like:

-------
May 12 22:22:48 co ctl_cyrusdb[17388]: DBERROR db4:
/var/lib/imap/db/__db.001: unable to initialize environment lock:
Function not implemented
May 12 22:22:48 co ctl_cyrusdb[17388]: DBERROR: dbenv->open
'/var/lib/imap/db' failed: Function not implemented
May 12 22:22:48 co ctl_cyrusdb[17388]: DBERROR: init /var/lib/imap/db:
cyrusdb error
May 12 22:22:48 co ctl_cyrusdb[17388]: done checkpointing cyrus
databases
-------

Not sure if this is an error because the startup doesn't say anything. 
Testing shows that things are working.