I´ve got an unusual problem with copy/pasting text from one editor window to another.
Every newline I copy from a "advanced" editor window, ie the type that you get if you click on quote, ends up as 2 newlines when I paste the text to a quick reply editor window. Somehow this only happens with the quick reply editor not if i paste it to another advanced editor.

IE 6.0.2900.2180.xpsp.060411-1541 (cryptic version numbers ftw)