Sony :: VGN-FE890 Extremely Hot/overheating

I'm pretty sure this has to be a common problem but so far I haven't been able to dig up substantial information about it, although I've found scattered evidence. Just over the 1 year mark and the 1 year warranty expiration for my Vaio VGN-FE890, it started running dramatically warmer, and when running intensive programs it would get extremely hot.

Specifically, it's the right 2/3's of the laptop that gets the hottest, with it getting hotter the farthest to the right. The laptop was originally very cool during the first year, so the change was easily noticeable when it happened.

I can easily hear the CPU fan going all the time when it's on and warmed up, sometimes louder/faster than others, so I know it's working. I need to do some testing to be sure, but at the moment I'm not certain if it's the graphics chip that's generating the extreme heat, or if it's the processor, but it's certainly one of the two. It's definitely not the battery or the HD. It's always very hot ever since the change, but it definitely gets dramatically hotter when running processor and/or graphics intensive programs, especially 2D and 3D games (too hot too touch the underside of the laptop). Needless to say, I haven't overclocked or touched the graphics (NVidia GeForce Go 7400) chip in any way.

Not looking for random idle guesses about the source of the heat, I can do that myself, but if anybody is familiar with the problem or owns a similar model Vaio suffering from the same issue I'd be anxious to hear about it. I want to determine if this is a known, documented problem with this model and/or this graphics chip.