Has anybody experienced performance issues (extreme memory consumption, rather than speed of processing) when using Xalan to transform XML? We are using XSL to render HTML from some XML data. In one extreme case the template object (from package org.apache.xml.templates I think) takes about 20MB for the object tree, from an XSL file of 250k. What tips for composing XSL can people suggest to reduce the size of the Object tree and overall memory consumption? Thanks, Tim.