Food for though:
Here's an article interviewing two Google Engineers about Java performance. These guys did a presentation at the Software Development West conference last year. I can't find their actual talk, but here are the powerpoint slides.
Here's an interesting page. full of infor about various recent Java versions and other myths/legends. Be sure to check the Java Legends link at the bottom.
Here's an article from 2005 written by Brian Goetz (Author/Concurency guru). The info is obviously a bit old, but it's difficult to find recent articles on the subject. This is probably due to the fact that most professionals who use Java consider it pretty obvious that it's not slow.
Java theory and practice: Urban performance legends, revisited
This post has been edited by Core: 04 June 2009 - 09:53 AM