Q: I am using Tomcat 4.1.14, when run Bugzero, sometimes I got a blank page.
   What happened?

A: This is an issue with Tomcat 4.1+ using the CoyoteConnector. The problem
   can be fixed by replacing CoyoteConnector to HttpConnector. Specifically, in
   tomcat's conf/server.xml file, you alter   
   
   <Connector className="org.apache.coyote.tomcat4.CoyoteConnector"
   ...
   to
   <Connector className="org.apache.catalina.connector.http.HttpConnector"
   ...

   You need restart Tomcat for the change to take effect.