>    Transformer transformer = tFactory.newTransformer(xsl_ss);
>
> The javadocs mention this for the newTransformer() method:
> "Care must be
> given not to use this object in multiple threads running
> concurrently".
> I am not running multiple threads in my servlet.  So, I can't imagine
> that that is the problem.

One possibility: unless your servlet implements the interface
SingleThreadModel, the servlet engine (Tomcat, in this case) will invoke it
on multiple threads. So you may have a multi-threaded situation without
realising it.



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