horde login problem

[Alar Sing]

Hello

I have kolab installation on openSuSE 10.3 from rpm's.
Horde is installed using  
http://kolab.org/cgi-bin/viewcvs-kolab.cgi/*checkout*/server/horde/external-horde.sh this  
script
Now when I log into horde and click on some mail's I need to relogin  
to horde. If I use click to mail folder from sidebar list of mail is  
shown again and now I can read all mails no need to login.
Nothing is shown in apache error log
Versions
PHP Version: 5.2.5 (imap patch)
Apache: 2.2.4

-- 
Lugupidamisega,
Alar Sing