That idea introduces asynchronous processing, which would be a new feature. All we want to do here is make tests marked async run without causing problems. That's what this bug is about. We'll do that by waiting for the test to finish, so that only one test runs at a time, even if marked async. For more than that, see NUnitLite or wait for NUnit 3.0! Charlie On Wed, Oct 3, 2012 at 4:35 PM, Jv