Same problem here, i7/nvidia as well.
The problems started after the xorg 1.9+nvidia update in the maverick beta. And was still there on a fresh maverick install after release.
Some discussion about this was also done in https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/649809 Which also seems to be a problem specific to i7/nvidia/ssd, and for me started also after the xorg/nvidia update.
Same problem here, i7/nvidia as well.
The problems started after the xorg 1.9+nvidia update in the maverick beta. And was still there on a fresh maverick install after release.
Some discussion about this was also done in https:/ /bugs.launchpad .net/ubuntu/ +source/ gnome-settings- daemon/ +bug/649809
Which also seems to be a problem specific to i7/nvidia/ssd, and for me started also after the xorg/nvidia update.