Cyrus IMAPd 2.3.12p2 - Unknown code 54?

[Sebastian Langenhorst]

Hi!

Since using version 2.3.12p2 imapd in a murder-environment returns "Unknown code
54"-messages..

Here's sample:
S: * OK [CAPABILITY IMAP4 IMAP4rev1 LITERAL+ ID
MUPDATE=mupdate://mupdate/ STARTTLS AUTH=PLAIN AUTH=GSSAPI SASL-IR]
mail.test.tld Cyrus IMAP Murder v2.3.12p2 server ready
C: E00001 CAPABILITY
S: * CAPABILITY IMAP4 IMAP4rev1 LITERAL+ ID MUPDATE=mupdate://mupdate/ STARTTLS AUTH=PLAIN AUTH=GSSAPI SASL-IR ACL RIGHTS=kxte QUOTA MAILBOX-REFERRALS NAMESPACE UIDPLUS NO_ATOMIC_RENAME UNSELECT CHILDREN MULTIAPPEND BINARY SORT SORT=MODSEQ THREAD=ORDEREDSUBJECT THREAD=REFERENCES ANNOTATEMORE CATENATE CONDSTORE SCAN IDLE URLAUTH
S: E00001 OK Unknown code 54
C: B00002 Login "foo" "bar"
S: B00002 OK [CAPABILITY IMAP4 IMAP4rev1 LITERAL+ ID
MUPDATE=mupdate://mupdate/ LOGINDISABLED ACL RIGHTS=kxte QUOTA MAILBOX-REFERRALS NAMESPACE UIDPLUS NO_ATOMIC_RENAME UNSELECT CHILDREN MULTIAPPEND BINARY SORT SORT=MODSEQ THREAD=ORDEREDSUBJECT THREAD=REFERENCES ANNOTATEMORE CATENATE CONDSTORE SCAN IDLE URLAUTH] User logged in
C: N00003 LSUB "" "*"
C: O00004 STATUS "INBOX" (UNSEEN RECENT MESSAGES UIDVALIDITY UIDNEXT)
S: * LSUB ....
S: N00003 OK Unknown code 54 (0.000 secs 0 calls)
S: * STATUS INBOX (MESSAGES 70 RECENT 0 UIDNEXT 102 UIDVALIDITY 1208205174 UNSEEN 0)
S: O00004 OK Unknown code 54
C: F00009 SELECT "INBOX"
S: * FLAGS (\Answered \Flagged \Draft \Deleted \Seen)
S: * OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen \*)]  
S: * 70 EXISTS
S: * 0 RECENT
S: * OK [UIDVALIDITY 1208205174]  
S: * OK [UIDNEXT 102]  
S: * OK [NOMODSEQ] Sorry, modsequences have not been enabled on this mailbox
S: * NO [ALERT] Unknown code 45
S: * OK [URLMECH INTERNAL]
S: F00009 OK [READ-WRITE] Unknown code 54
C: U00010 FETCH 1:70 (UID FLAGS)
..

As you can see there's an "unknown code 54" nearly next to every "OK" - is that
correct? Never saw that at 2.3.11...
I grep'd already the source, but couldn't find anything suspicious
(whereas i'm not really deft with the code)

Regards,
Sebastian