The idle temps are not important here.
The idle temps can easily be higher if the case is much warmer than it was initially (and when you're priming and 3dmarking all night, you are going to get high case temps, with the CPU and video card working double time).
Especially so with a closed case.
What we care about-are the load temps.
If your load temps are the same or lower than they were last night, then you're doing fine. Reseating a heatsink will almost never make idle temps go down, unless it were mounted so poorly (or the AS5 applied so poorly or too much), that you would be getting more than 55C load.
Too many strange things can affect idle temps.
You can also use a monitoring program (Taskinfo 2003 is a good one) to check CPU usage.
But I'm pretty sure that your case was probably running cooler before testing, than after. And yes, who knows about the diode. Just look at load.
And you reseated the heatsink and your idle temp went even higher. Obviously, because you reseated the heatsink ! Don't reseat it next time, unless there is a serious problem with the load temps.
And, the best way to apply AS5, is directly on their website. You can -try- the razor blade method, but it's too time consuming and the chance of an error is too high. Just use their instructions.
