I've noticed a bug when setting up tomcat 4.1.18 via the administration console. It creates XML in server.xml which includes the parameter digest="" ( if no digest is specified ). Tomcat actually tries to create a digester class with the zero length'd string. Delete this parameter out of you server.xml!
Oh yeah, and has anyone clicked on datasources and got a parse error, something like invalid parameter driverClassName ( even if none exists in server.xml, or in web.xml )....? Tomcat is a fantastic product, and I'm thankful that the development process has such a huge amount of impetus behind it, however the strife I've had with tomcat rpms / finding accurate documentation, and dealing with the bugs has been very frustrating...
