Summarized my findings and post them on [http://xiajunshi.wordpress.com/2009/04/06/how-does-run-run-configurations-work/ my blog(How does “Run as->Run configurations” work)]<br/>Reproduced the [https://bugs.eclipse.org/bugs/show_bug.cgi?id=244862 bug 244862]<br/>Catch several stack traces for bug 244862 and blog them on [http://xiajunshi.wordpress.com/2009/04/12/stack-trace-for-bug-244862/ Stack Traces for Bug 244862 - WTP]<br/>