QUOTE(Mysticallity @ Jan 7 2006, 04:26 PM) [snapback]38608[/snapback]
Logging out due to inactivity will be present regardless of whether you have the Runescape window on or not.
Even if you use this technique, that doesn't mean a duel will result in a draw. If your opponent can kill you first, you will still lose. Then again, it's another flaw in Duel Arena.
It was never a bug. It was there ever since RS Classic was out. Just to quote Runescape's rules:
So logging out due to inactivity was intentional. People just take advantage of it.
Also, someone sent a bug report to jagex during RS1 (back before you got a message from a machine) and reported X'ing as a bug. He/she got a reply stating that it isn't a bug and is "legal". The wilderness is the wilderness and pretty much is a free for all.