[Dovecot] Error with 1.1 Beta

[Jeff Grossman]

I am running the latest version of the 1.1 beta and just got the 
following error:

Jan 17 06:20:13 apple dovecot: IMAP(jeff): 
rename(/home/jeff/Maildir/.Sent Items/dovecot.index.cache.lock, 
/home/jeff/Maildir/.Sent Items/dovecot.index.cache) failed: No such file 
or directory
Jan 17 06:20:13 apple dovecot: IMAP(jeff): file_dotlock_replace() failed 
with index cache file /home/jeff/Maildir/.Sent 
Items/dovecot.index.cache: No such file
or directory

Is it something I should be concerned about?  I had just sent an e-mail 
about 30 seconds before that one which did not give the error.  I will 
see if I get the error again when I send this one.

Jeff