BFO have released a new version of their Java PDF Library.
Version 2.11.2 fixes an issue with IBM versions of Java that was introduced in the previous release - a change of obfuscator clashed with a bug in some releases of the JRE supplied with Websphere. There are fixes for Customers reading and writing PDFs to the same File, a memory leak in the Viewer has been fixed, and a number of bugs have been fixed, including a Swing screen corruption issue that sometimes occurred on Windows.
The full changelog is available here, and the new release is available to download at http://bfo.com/download/