MbUnit 2.4 successfully runs on Mono 1.2.3 in Ubuntu.There are a few things to keep in mind about running MbUnit like this due to Mono limitations. The native MbUnit GUI has no support, MbUnit.Cons is however supported. MbUnit rollback attribute for .NET 1.1 and the Performance Assert are not supported, the rollback attribute for .NET 2.0 is however supported. If I ever find the time I'll look at porting the MonoDevelop NUnit support to MbUnit.
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