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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.9) Gecko/20020513

Description of problem:
I had a RH7.1 system where I created a webmail system using PHP/IMAP.  I used
the supplied Apache rpms (didn't compile my own) but I built my own PHP module
(4.1.2) to avoid the exploits in pre-4.1.2.  I
compiled IMAP support using the University of Washington's c-client I downloaded
(part of their imap server) but didn't use that imap server.  I used the imapd
rpm from RH7.1.  It all worked perfectly.  I rebuilt the server using RH7.3 with
the included rpms for php/imap (and imap-devel, etc).  The app no longer works.
 From the browser, I 
get:

Warning: Couldn't open stream {192.168.1.2}INBOX in /var/www/html/imap/auth.php
on line 19

The line looks something like this:

$mailbox=imap_open("{192.168.1.2}INBOX","user","passwd");

I don't want to have to rebuild PHP and I'm about to start writing my own imap
functions that use sockets, but I shouldn't have to.

I get messages in /var/log/maillog like this:

May 18 19:24:28 home2 imapd[6990]: imap service init from 192.168.1.2
May 18 19:24:28 home2 imapd[6990]: Command stream end of file, while reading
line user=??? host=UNKNOWN

RH says that this is not covered in the SLA, but I'm a bit upset that THEY
compiled these rpms that are somehow broken.

The imap server works fine when using Outlook Express, Mozilla, Kmail, etc.  PHP
works fine.  PHP+IMAP=dead.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. $mailbox=imap_open("{192.168.1.2}INBOX","user","passwd");
2. Invoke from browser


Actual Results:  Warning: Couldn't open stream {192.168.1.2}INBOX in
/var/www/html/imap/auth.php on line 19


Additional info: