Every one wants to be on stage...even bugs

I just read a post by Lukas Hasik ( http://blogs.sun.com/lukas/entry/failed_demos_at_javaone ) talking about failed demos at javaone and already we have three failed demos....the question that raised is dis...why did the bugs all want to appear at the presentation time? No matter how much QA u do..u cant seem to get a bug-free code and at presentation they all keep coming up....well i guess this blog answer that.....Let me know what you feel ok?