I found an intresting bug (or actually it was my big brother). He was chatting in irc and playing RuneScape in same time. Once he clicked a link in irc it was opened in window where RuneScape was running. Before the linked page loaded, he quickly pushed CTRL + N to make a new window there and so RuneScape opened in new window. It loaded normally but this time the explorer window wasn't normal RuneScape playing window, but a normal explorer window that could be put to full screen (which he did). When he started playing runescape, he noticed something very weird! All players had three heads but no bodies! there were lots of floating heads there! Luckily i was arounf when he was playing and too a screen shot of what happened:

Wot the fuck?

Well, this isn't the best way to inform a bug, but it's funny at least.