Connection reset error

["Propes, Barry L [GCG-NAOT]" <ba...@citigroup.com>]

I am getting this error now after logging on to a certain portion of my site within the security constraint.
 
The connection was reset         
 
The connection to the server was reset while the page was loading.

    *   The site could be temporarily unavailable or too busy. Try again in a few
          moments.
 
    *   If you are unable to load any pages, check your computer's network
          connection.
 
 
Any idea what could be the cause? It had previously worked fine, but now after logging in at the FORM level, it kicks me out and closes the Tomcat connection? Actually the console is still running with no errors, but the browser connection seemingly gets closed.