This was already fixed.  But it shouldn't make a difference since IMAP 
traffic has nothing to do with the browser.

I still can't reproduce, and the one issue mentioned has already been 
fixed, so I am closing this ticket.

I used tshark to see what happened using IE9:

  25.446945 139.124.132.191 -> 139.124.132.126 IMAP Response: 1 OK 
[CAPABILITY IMAP4 IMAP4rev1 LITERAL+ ID LOGINDISABLED COMPRESS=DEFLATE 
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
  25.449995 139.124.132.126 -> 139.124.132.191 IMAP Request: 2 EXAMINE 
INBOX/annuaire (CONDSTORE)
  25.489511 139.124.132.191 -> 139.124.132.126 TCP 13105 > 40869 [ACK] 
Seq=459 Ack=55 Win=5888 Len=0 TSV=1773271710 TSER=123235872
  25.489529 139.124.132.126 -> 139.124.132.191 IMAP Request:
  25.489678 139.124.132.191 -> 139.124.132.126 TCP 13105 > 40869 [ACK] 
Seq=459 Ack=57 Win=5888 Len=0 TSV=1773271710 TSER=123235876
  25.489848 139.124.132.191 -> 139.124.132.126 IMAP Response: * FLAGS 
(\Answered \Flagged \Draft \Deleted \Seen $NotJunk JunkRecorded $Junk 
$Label3 $Label1 NonJunk $Forwarded)
  25.490762 139.124.132.126 -> 139.124.132.191 IMAP Request: 3 UID 
SEARCH CHARSET UTF-8 SUBJECT fichier
  25.530510 139.124.132.191 -> 139.124.132.126 TCP 13105 > 40869 [ACK] 
Seq=809 Ack=99 Win=5888 Len=0 TSV=1773271751 TSER=123235876
  25.530527 139.124.132.126 -> 139.124.132.191 IMAP Request:
  25.530678 139.124.132.191 -> 139.124.132.126 TCP 13105 > 40869 [ACK] 
Seq=809 Ack=101 Win=5888 Len=0 TSV=1773271751 TSER=123235880
  25.530818 139.124.132.191 -> 139.124.132.126 IMAP Response: * SEARCH 46 47
  25.541300 139.124.132.126 -> 139.124.132.191 IMAP Request: 4 
MYRIGHTS "impsearch\000dimpqsearch"
  25.580544 139.124.132.191 -> 139.124.132.126 TCP 13105 > 40869 [ACK] 
Seq=864 Ack=135 Win=5888 Len=0 TSV=1773271801 TSER=123235881
  25.580562 139.124.132.126 -> 139.124.132.191 IMAP Request:
  25.580736 139.124.132.191 -> 139.124.132.126 TCP 13105 > 40869 [ACK] 
Seq=864 Ack=137 Win=5888 Len=0 TSV=1773271801 TSER=123235885
  25.580748 139.124.132.191 -> 139.124.132.126 IMAP Response: 4 NO 
Mailbox does not exist
  25.585265 139.124.132.126 -> 139.124.132.191 IMAP Request: 5 
MYRIGHTS "impsearch\000dimpqsearch"
  25.624532 139.124.132.191 -> 139.124.132.126 TCP 13105 > 40869 [ACK] 
Seq=893 Ack=171 Win=5888 Len=0 TSV=1773271845 T

I search in a subfolder for subject fichier.
In Firefox, it's working even whith the no mailbox answer.

Hope this helps

Dom

Definitely don't see this.  You will need to provide step-by-step 
directions to reproduce.

Hello,

Search is looping and fails with IE9. Cyrus IMAP used as backend, but 
same config is working under Firefox 4.0.1
Should be on the explorer side. Works well without dynamic interface

Dom