From
https://bugs.launchpad.net/ubuntu/+source/amule/+bug/95715"In edgy, "amule" application window steals focus on start.
Most of gnome applications behave correctly: when they
start a bit longer and user switch to other window/application,
then newly launched applications open on background.
But this is not the case of this application."
I agree with it, it's a bit annoying.
Of course, this is low priority, but it would be fine to change it.
Have a nice day
Emilio