Comment 12 for bug 351186

Its not only "unminimizing" effect is too slow.

I've found that all my system slows down on "unminimize/maximize/unmaximize" ("minimize" is works smoothly by the way).

Slowdown is global because for example even my music player stops playback for couple seconds during "unminimizing" huge applications.

Overal system slowdown period is from 1 to 4 seconds and depends on application I'm unminimizing.

For example if I'm "unminimizing" the application like FireFox with over 15 tabs tha holds about 450 Mb RAM it slows down all the system for about 3 seconds and y music player stops playback for 1 second.