We are having problems authoring the Drools manual, probably due to its size and number of images. We can open master.xml once, but if go into a few sections and make changes and then telll it to update the parent document eventually it just freezes, making XMLMind unusable :(
You can see this for yourself by doing an svn checkout from here http://anonsvn.labs.jboss.com/labs/jbossrules/trunk/documentation/manual/ and opening master.xml and trying to make changes in sub sections. Thanks for the great product, and good luck with the fix for above :) Mark

