It seems you're not the only one. I have just posted an answer to a similar problem to the fop-dev list. Follow the link below for my answer.
http://marc.theaimsgroup.com/?l=fop-dev&m=101496883317389&w=2 > I am getting a FOPException error when I sent large number of requests > to FOP servlet. I checked the FOPException.java, and can't figure out > what is causing this problem. What confuses me is of the > 100 pdf requests sent, majority of them came back successful, only a few > gave me FOPException error. Would anyone please explain to me why this > is happening? Thanks in advance. Cheers, Jeremias Märki mailto:[EMAIL PROTECTED] OUTLINE AG Postfach 3954 - Rhynauerstr. 15 - CH-6002 Luzern Tel. +41 41 317 2020 - Fax +41 41 317 2029 Internet http://www.outline.ch