JSP issue in JavaBean or Netwok settings?


I have a JSP application running on Tomcat server 4.1.31.
We have issue with the application as stated below:
First user logged in as user “A”. After he logged out, user “B” logged in, however system will show that the user is logged in as the previous user “A”.

It works perfectly in some network; however it doesn’t work as it should be in other network. It has this problem only in certain network or ISP configuration.
We noticed those computers in the network that has problem with “tracert” command has issue in our JSP application.

Please see the following link for detailed explanation, screen shot of the "tracert" and the sample JSP codes

Please advise, Thanks.
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in a quick check, when the user is logging off, does it give some errors?

try {
      ev.addRecord("Logout", "Logout", "Logout", UserInfo[2], UserInfo[11], UserInfo[10]);
}catch(SQLException SE) {}

catch the exception here and see what is happening up.
may be it couldn't logoff the first user. Just a guess.

rospccAuthor Commented:
The log off didn't give any issue. It works perfectly in most of the networks.
rospccAuthor Commented:
I've found the solution by forcing the network to clear the cache with the codes below:
        // Set to expire far in the past.
        response.setHeader("Expires", "Sat, 6 May 1995 12:00:00 GMT");
        // Set standard HTTP/1.1 no-cache headers.
        response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
        // Set IE extended HTTP/1.1 no-cache headers (use addHeader).
        response.addHeader("Cache-Control", "post-check=0, pre-check=0");
        // Set standard HTTP/1.0 no-cache header.
        response.setHeader("Pragma", "no-cache");

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rospccAuthor Commented:
How do I close this question?
Closed, 250 points refunded.
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