Given the presence of the following bug in IE
this is a fairly serious problem.
If you are running Apache as a web server front-end to JBoss-Tomcat, you can use mod_header to remove the Pragma and Cache-control headers.
Add the following lines to the httpd.conf file:
Header unset Pragma
Header unset Cache-control
However, this is not an ideal solution, hopefully the JBoss folks will find a better workaround in the near future!