On empathy 3.6.1 and gnome-contacts 3.6.1 I see high CPU usage and a weird response to the mouse on the contact list widget.

Sometimes clicks are not catched, sometimes the scrollbar becomes inactive when the list has focus.

But perhaps the worst is when you click the app window, or switch to it, the window gains "active" status but the contact list still takes around 1 second to go from inactive to active, during this time it is impossible to interact with the list. So, you can not click-to-focus directly on a contact in the list and have it immediately selected. It will take a noticeable delay and some times not work.

This seems to be one single problem, when this bugs show (which is always) I can see empathy/gnome-contacts raise CPU usage to 30% or more. My CPU fan goes bananas when I use any of the two.

I have tried with a smaller contact list, but it is the same. Also having "show groups" selected and most of them collapsed, does not help.