Weird difference between 4.0.6 and 4.1.12 - speed of downloading a .jar

I'm experiencing a weird delay when downloading a .jar file in Tomcat 4.1.12. I have an unremarkable 56K .jar file which downloads from 4.1.12 only after a noticeable delay, whereas under 4.0.6 it's almost instantaneous. I did a test with the same JAR file copied to the examples folder of a clean

Problems with Tomcat4 Security Design

I'm having problems using the Tomcat 4 security design for a slightly customised requirement. I've created a custom realm for an external information provider which, when I authenticate a user, gives me a token (in the form of an essentially opaque object). This token needs to be passed back to