CRAM-MD5 problem with Horde2/IMP3 and PHP4.1.1 ..

Morning all ... I'm runing Cyrus-IMAPd 2.0.16, Cyrus-SASL 1.5.24 and DB3.2.9 on several servers, with Horde2/IMP3 installed as a front end ... if I close my web browser down and restart it, then try to login, *every time* it will give me: Feb 7 16:23:41 earth imapd[49380]: login: earth[64.49.215.11] cyrus CRAM-MD5 User logged in Feb 7 16:23:41 earth imapd[49380]: badlogin: earth[64.49.215.11] CRAM-MD5 authentication failure [incorrect digest response] Feb 7 16:23:47 earth last message repeated 2 times Without closing the browser, if I try to login a second time, I then get: Feb 7 16:26:40 earth imapd[50691]: login: earth[64.49.215.11] cyrus CRAM-MD5 User logged in And I'm in no problem ... If I login with pine, it goes straight through, no errors ... Doesn't appear to make a difference as to which browser is used, that first login attempt will give me a 'User logged in', with a subsequent 'badlogin:' error and kick me back out again ... Can anyone provide any insight or thoughts as to what it is that I'm not seeing? That I might have setup wrong? My PHP config is viewable at: http://www.hub.org/phpinfo.php, and I am running iwth cclient-2001a compiled in ... Help? Thanks ...