[sork] Passwd error using poppassd (password change works)

[impuser@bitrealm.com]

I am using the poppassd backend for passwd.  When changing the users  
password, the password change works; however, I get an error in the  
browser just above the right window pane:

Notice: Only variable references should be returned by reference in  
/home/httpd/html/horde/passwd/lib/Driver.php on line 110

Warning: Cannot modify header information - headers already sent by  
(output started at /home/httpd/html/horde/passwd/lib/Driver.php:110)  
in /home/httpd/html/horde/passwd/templates/common-header.inc on line 4

Warning: Cannot modify header information - headers already sent by  
(output started at /home/httpd/html/horde/passwd/lib/Driver.php:110)  
in /home/httpd/html/horde/passwd/templates/common-header.inc on line 5

Just below the errors above, I get "(green checkmark) Password changed on..."

Versions:
php-5.1.2

Forwards: H3 (3.0)
Gollem: H3 (1.0.2)
Horde: 3.1
Imp: H3 (4.1)
Klutz: 1.0-cvs
Kronolith: H3 (2.1)
Passwd: H3 (3.0)
Turba: H3 (2.1)