I see.  In your original post, you said and someone is calling invalidate and 
it is probably your code.  I found code in our webapp that upon every login, we 
call getSession(), then invalidate() and getSession again.  Imagine this in the 
post that you first responded to, when you said someone called invalidate and 
is was probably your code.  Do you think that this can be responsible for this 
behavior of the original guy getting logged out?  I talked to the network guys 
and they say they do have sticky sessions on.  They call an echo servlet every 
5 seconds, and if it does not respond I think in 3 seconds they mark the 
machine down and this is what caused the user (above your original post) to 
have the machine be switched on them.  They also say that the machines are 
flapping on and off all day long, since this request times out a lot during the 
day.

   I also have found multiple people that generated scripts to screen scrape 
our website.  When they do this, each hit creates a new session and our current 
session timeout is 1 hour.  Some with multiple threads a second hitting the 
servers.  With at most 5 machines, what do you think is the maximum number of 
sessions at one time can be?  We have Linux 2.6.9-22, 2 gigs of memory, 4 cpu?s 
per machine, !386,  java version 1.4.2_08-b03.

I just installed Jboss on my laptop and created a cluster with my home pc.  I 
am turning on advanced debug, changing settings to match production, and am 
going to try to develop some test cases.  

I am real happy that you have joined my thread.  This is currently my company?s 
biggest bug with our on demand application and we will be loosing large dollar 
customers because they keep complaining that they keep getting logged out and 
can not work effectively.   Any input is greatly appreciated. 


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