Cannot execute query - Can't find file: (error: 9)

[Frank Bax]

Cannot execute query.

<snip my SQL statement>

Can't find file: './donor/list_lst.frm' (errno: 9)

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I got the same error last week on a different table.  Today I notice that 
there is a table in another database on same system producing the same 
error.  I attempted to access mysql cli, but it just locked up after 
entering password.  Start/stop mysql and mysql cli at least started but 
issued errors about some tables even before I entered a command.  I decided 
to reboot and the problem goes away (for a while).

MySQL 4.0.20 - OpenBSD 3.6

Frank