[users@httpd] mod_load_balance issue

["Günther Mittermayer" <guntherm2@xxxxxxxxx>]

Hi all,

i have httpd working with mod_proxy and
mod_load_balance, but my system is very unstable. In the middle of my
session I get some 500 Internal Server Error messages.  If I comment
out from my httpd.conf all application servers but one, the problem
goes away.

It seems to me that apache is not forwarding the requests to the same server within the same session.
As far as I understand, this is what the "stickysession" parameter should do...

Below is the part of my 
httpd.conf that matters, am I missing something?

Thanks in advance,
Günther.

=============================
<Proxy balancer://portal>
BalancerMember 
http://server1:port
BalancerMember http://server2:port
BalancerMember http://server3:port

BalancerMember http://server4:port

</Proxy>

ProxyPass /logon  balancer://portal/logon lbmethod=bytraffic stickysession=jsessionid nofailover=off
ProxyPassReverse /logon balancer://portal/logon