Session Timeout on wrong instance

Hi,

we have got a problem for some months now that we can=E2=80=99t find a so=
lution for.=20

The situation: We have an application that is running on four different a=
pplication servers (with quite some instances on each server, servers run=
ning on linux) controlled by monitors running on two of those servers (ea=
ch monitor is responsible for 2 servers). The wotaskd is running on each =
server as well. Finally we got two web servers (Apache 2.0.49). We use Ja=
va 1.4.2, WebObjects 5.2.3.

The problem: Several times a day on each of the instances we got session =
timeouts (SessionRestorationErrors). But the sessions don=E2=80=99t time =
out, the requests are placed on the wrong instances. Of course, the sessi=
on ids are not known on those wrong instances so the SessionRestorationEr=
rors take place.=20
What we have done so far: we tried setting send timeout, receive timeout =
and connect timeout in =E2=80=9CLoad Balancing and Adaptor Settings=E2=80=
=9D to values of one minute and above without any success. We are logging=
 the woadaptor now. It seems we have got some kind of connection trouble:

Error: couldn't connect to 10.0.0.40 (1085): Operation now in progress
Error: Error connecting to server 10.0.0.40
Warn: Unable to find instance 55. Attempting to select another.
Warn: Unable to find instance 55. Attempting to select another.
Warn: Unable to find instance 60. Attempting to select another.

But 10.0.0.40:1085 is up and running. This error message is just been thr=
own about every 10 or 20 minutes and not all the time.=20
We found some similar problems in mailing lists but none was helpful so f=
ar. Any suggestions how we can get rid of this problem? Thanks in advance=
.

Ingo
--=20
Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen!=20
Ideal f=C3=BCr Modem und ISDN: http://www.gmx.net/de/go/smartsurfer