OK, let's ignore bug 1012401 because it's a separate bug and unlikely to have a direct causal link to this one.
Now, you say the nvidia powermizer issue was new in 12.10. So either:
(a) It's not a relevant detail because this bug was against 12.04; or
(b) Powermizer is the issue and it actually first appeared in 12.04, not 12.10.
OK, let's ignore bug 1012401 because it's a separate bug and unlikely to have a direct causal link to this one.
Now, you say the nvidia powermizer issue was new in 12.10. So either:
(a) It's not a relevant detail because this bug was against 12.04; or
(b) Powermizer is the issue and it actually first appeared in 12.04, not 12.10.
Which is it?