Double pump from cold-start is actually normal depedning on how the system is configured (soem settings need a power cycle to be disabled/enabled). I would not worry about this.
Thanks Raja so much. I am overclocked (if that makes difference).
Is there a way I can stop this (reconfigure the settings). I boot up about once or twice per day normally, and does this count as a cold boot ( psu cable never removed or mains power never turned off).