I have taken over this issue on our side and have found that it is Aspose.Slides that is causing the issue. I have attached a sample java file and the verbose output of it running.
We have now tried this on 2 different servers.
SunOS 5.11 11.0 sunv4
Also an issue on HP-UX 11.31 ia64
we are using aspose.slides-3.0.0.