Comment 21 for bug 236376

Nicolas_Raoul (nicolas-raoul) wrote :

In addition to being useless, bringing back old windows is painfully slow, because those are unused programs already on swap memory.

On Natty's Unity, after pressing SUPER+D twice, when finally the desktop becomes visible, it is partially hidden by the dash overlay that always decides to open at that time. So it requires the user to click somewhere else so that the dash disappear.
All in all, showing the desktop takes a good 6 seconds.