IDE's for C# development on Linux?
MonoDevelop 2.0 has been released, it now has a decent GUI Debugger, code completion, Intellisense C# 3.0 support (including linq), and a decent GTK# Visual Designer.
In short, since the 2.0 release I have started using Mono Develop again and am very happy with it so far.
Check out the MonoDevelop website for more info.
Monodevelop
There are 2 versions around:
1.0: the currently stable version. It is indeed stable, but somewhat limited in its capabilities. It's very good for smallish projects. I got it via the ubuntu hardy repos.
2.0RC (aka 1.9.x) you can get it via SVN and compiling. The process is quite straightforward, and you can run it without installing (via
make run). It's somewhat less stable than 1.0, but it depends on which build you get (it's a development snapshot). Regarding capabilities, it is great. It has refactoring, profiling, tons of plugins, etc.