With JOptionPane as a message box on WinNT 4, when a message box is displayed with the system new line (\r\n), little boxes appeared at each new line. When hard-coded '\n' is put in for each dialog, everything is displayed properly.
We shouldn't hard-code a UNIX newline character without doing the same for Windows.

Scott Violet's comments regarding this:
"I think it is more of I didn't consider it:) I think we should add
support for this. The parsing only looks for \n, not \r\n, which is
why \r is getting rendered as a pretty little box."