After I upgraded to 3.0, I felt the phone was slower than before.
But today I realized that the reason that I felt it's slower is that sometimes when I quit an app, there is no animation.
Normally when you quit an app (i.e. by pressing the home button), you should see the app shrinking and all the app icons on the springboard moving into place.
But now, after I press the home button, I will, sometimes, see the app being frozen for 1 second and then the home screen will come up immediately after that without animation at all.
This gives me an impression that the phone is slower.
However, the thing is that it doesn't always behave like this.
If I tap an app and quit immediately after it finishes loading, it seems to be fine.
But if I use the app for some time, it may quit without animation.
I jailbroke with Redsn0w and is using Winterboard. I tried disabling everything in Winterboard, but it doesn't help. Is anybody seeing the same problem?