With 0.2.28 I'm still seeing CPU thrashing (constant 50+% load for mutter) with a couple of maximized windows opened (usually a mix of GNOME Terminal, Opera, Chromium, XChat, Thunderbird, and gedit), that ends with unmaximizing or closing one or more of those windows.
Using nvidia-current 256.44 with a nVidia GeForce 6600 GT (NV43).
With 0.2.28 I'm still seeing CPU thrashing (constant 50+% load for mutter) with a couple of maximized windows opened (usually a mix of GNOME Terminal, Opera, Chromium, XChat, Thunderbird, and gedit), that ends with unmaximizing or closing one or more of those windows.
Using nvidia-current 256.44 with a nVidia GeForce 6600 GT (NV43).