dev build 200802021203
JDK 6 update N build 11

- This problem is reproducible 100% of the time.
- The bug only occurs when the application is being debugged so it is possibly a race condition.

Test program:

public class Test
{
  public static void main(String[] args)
  {
    System.out.print("line1"); // breakpoint here
    System.out.println("line2");
  }
}

1) Start the debugger with a breakpoint set on "line1".
2) Step over both lines
3) The output window is supposed to display "line1line2" but instead it displays "line1" <new line> "line2"