Well, which HSF are you installing onto which MB? What is the Vcore (voltage to the CPU) in BIOS? What CPU are you using? The temps seem high, how or what software are you using to measure the temperature of the CPU? I only ask this beause these are the appropriate questions to ask in this situation.
I have a pentium D 925 running currently. 60c is not that far off, a little high with stock cooling. Properly positioned case fans directing fresh airfow front to back of the case will reduce CPU and other MB chip temps considerablly. My 925 D is a Micro build in a small case with 'restricted' airflow. With the stock Intel HSF, I believe high 40's idle with an immediate jump to 50-51C under small load. I installed this Zalman HSF and my CPU temps idle are low to mid 40's, moderate load under 50C. The system runs all day at a workstation. At any rate, if using the stock Intel HSF they can be pain to get right. You might try pushing down slightly on the top of the HSF and observing the CPU temps. If the temp goes down when pressing the HSF against the CPU, the installation is bad. Best I can do with it.