After making any domain change and saving, the auto-reloader kicks in and does a recompile, but the web server hangs. Restarting grails fixes the problem.
Compiling 1 source files to /Users/user/.grails/1.0-RC1/projects/appname/classes
2007-10-21 11:53:06.108:/IOS:INFO: Destroying Spring FrameworkServlet 'grails'
[339614] hibernate.ConfigurableLocalSessionFactoryBean Closing Hibernate SessionFactory
2007-10-21 11:53:06.110:/IOS:INFO: Destroying Spring FrameworkServlet 'grails-errorhandler'
2007-10-21 11:53:06.111:/IOS:INFO: Closing Spring root WebApplicationContext
2007-10-21 11:53:06.111:/IOS:INFO: Shutting down Log4J
2007-10-21 11:53:06.155::INFO: jetty-6.1.4
2007-10-21 11:53:06.480:/IOS:INFO: Set web app root system property: 'appname' = [/Users/user/appname/web-app/]
2007-10-21 11:53:06.481:/IOS:INFO: Initializing Log4J from [/Users/user/appname/web-app/WEB-INF/classes/log4j.properties]
2007-10-21 11:53:06.483:/IOS:INFO: Initializing Spring root WebApplicationContext