Ice for .NET currently does not support the following features of Ice for C++: - Freeze Protocol compression is supported. Note that, for compression to work, libbz2 must be installed and in your %PATH% or $LD_LIBRARY_PATH. If libbz2 cannot be found at run time, Ice automatically disables protocol compression. You can download bzip2 at http://sources.redhat.com/bzip2 Supported environments: - Visual C#, .NET 2.0 and 3.5 (Windows) - Mono (Linux) See INSTALL.VISUAL_C# or INSTALL.MONO for installation information.