The bug you're describing appears to be different, I don't even run empathy. telepathy-indicator and /usr/lib/telepathy/mission-control-5 are running, but produce no load.
I did track down what appears to be my problem. Most of my problems happened when dealing with gnome-terminal, particularly when there's a lot of scrolling text. This bug appears to be relevant, though I have an Intel display, not Nvidia: https://bugs.freedesktop.org/show_bug.cgi?id=48395
Upgrading libcairo2 and libcairo-gobject2 to the version in raring (1.12.8-0ubuntu4) seems to fix the issue, and this was not present in precise, so I believe there's something in Cairo 1.12.2-1ubuntu2.1 (quantal).
The bug you're describing appears to be different, I don't even run empathy. telepathy-indicator and /usr/lib/ telepathy/ mission- control- 5 are running, but produce no load.
I did track down what appears to be my problem. Most of my problems happened when dealing with gnome-terminal, particularly when there's a lot of scrolling text. This bug appears to be relevant, though I have an Intel display, not Nvidia: https:/ /bugs.freedeskt op.org/ show_bug. cgi?id= 48395
Upgrading libcairo2 and libcairo-gobject2 to the version in raring (1.12.8-0ubuntu4) seems to fix the issue, and this was not present in precise, so I believe there's something in Cairo 1.12.2-1ubuntu2.1 (quantal).