[Dovecot] file_wait_lock with dovecot 0.99.14-1sarge

hi all,

i've just installed dovecot from debian sarge and i get this error:

Jun 28 16:31:50 server pop3(user): file_wait_lock() failed with custom flags file /mnt/nfs/users/user//mail/.customflags: No locks available

(maildir in nfs)

how seriously i should take it ? is it fixed in newer versions ?

thanks !