X51 recent update- now fans ramping real loud for 10-20 seconds, just web browsing.

I got my X51 for video editing. I've slogged lots of AVCHD video, full HD, with multiple CUDA accelerated filters, color correction and more on it in Adobe Premiere (which leverages Nvidia CUDA for video) and I never heard the fan. Now, I click one of the forum pages open and start scrolling and the fan ramps up so loud, I can't hear the music playing from my speakers. It's like a little jet engine. It stays high fro about 10-20 seconds and then goes right back down to an idle that is, itself, louder than I've every had before using the machine for a couple months now.

Even when it's idle and I'm doing nothing not even near the machine, it's considerably louder than it was last week. 

I need this noise gone. I'm all for a cooler system, but this is nuts.