[Dovecot] wierd ssl-parameters.dat regeneration error

I just had a strange problem with my Dovecot 1.0 installation. After about two weeks, it logged these messages:

 dovecot: Error: ssl-build-param: 
 rename(/usr/local/var/lib/dovecot/ssl-parameters.dat.tmp, 
 /usr/local/var/lib/dovecot/ssl-parameters.dat) failed: No such 
 file or directory
 dovecot: Error: child 30689 (ssl-build-param) returned error 89

And thereafter, all login attempts resulted in this:

 dovecot: Error: imap-login: read(ssl-parameters.dat) failed: 
 Unexpected EOF
 dovecot: Error: child 19036 (login) returned error 89

Thankfully, deleting the ssl-parameters.dat file (/var/run/dovecot/memoryhole.net/login/ssl-parameters.dat) and restarting dovecot fixed the problem, but it seems odd to me that dovecot expects /usr/local/var/lib/dovecot to exist (because, of course, it doesn't). I'm not defining that directory in the config file anywhere. Does anyone have any idea what's going on?

~Kyle

I'm sick of following my dreams. I'm just going to ask them where they're going and hook up with them later. -- Mitch Hedberg