Version 0.18 of Mono has been released. I've noticed that the debugger under development is in the CVS tree here but I haven't attempted to build it yet. I really need to do that before I make another attempt to run XML-RPC.NET under Mono.
I installed RedHat 8.0 in a VMWare session over the weekend but found that something was soaking up a huge amount of CPU which made everything very slow. However RedHat 8.0 is not supported by VMWare yet so I may need to stick with 7.3 for the time being.