In the Details: Mail Bounce
I’ve had an annoyance with the bouncing mail icon in the dock for quite some time. I like the notification mechanism, but I don’t like the fact that it bounces even when the Mail application has focus. In the past, I would ignore it while reading my mail. Then, I would minimize Mail, or switch to a different space, and remember, too late, that the icon was still bouncing. Clicking on the icon would stop the bouncing but bring Mail back up at the same time.
Snow Leopard hasn’t entirely fixed this, but it has mitigated the annoyance. I noticed that when an icon is bouncing in the dock, simply moving the cursor over it will stop the bouncing. It takes that as a sign that you have seen and acknowledged the notification.