Hi, There is a bug in the marshalling code for multi-dimensional arrays of simple types for omniORB 2.8 and 3.0. Credit to Thomas Quinot for spotting this one. If you use multi-dimensional arrays of simple types you should definately get the update from CVS, or a patch from http://www.uk.research.att.com/omniORB/omniORBbug.html Cheers, David