Thanks for your quick reply. I'm using Compiz, but it happens with Metacity too. I send it to the NA by clicking the NA RB icon. And I'm following Compiz's terminology here, but in Metacity "close animation" is what the window does when you press the close button (it just disappears) and "minimise animation" is what it does when you press the minimise button (it shows a black rectangle travelling to the taskbar or, in this case, to the NA).
Thanks for your quick reply. I'm using Compiz, but it happens with Metacity too. I send it to the NA by clicking the NA RB icon. And I'm following Compiz's terminology here, but in Metacity "close animation" is what the window does when you press the close button (it just disappears) and "minimise animation" is what it does when you press the minimise button (it shows a black rectangle travelling to the taskbar or, in this case, to the NA).