MBP 2.33GHz Core 2 Duo, CPU temp constant 90 degrees C at high load

I have a 2.33GHz Core 2 Duo MBP. Not sure which chipset, but not Santa Rosa. I'm still running 10.5.2 because I don't want to stop the process I'm running at the moment.
Anyhow, I'm running both CPUs at full load, and the program I'm running is very SSE-heavy. iStatPro reads the CPU as running at 90 degrees C with the fans running at about 3800RPM. It's been running like this for several days straight because this is the fastest compute hardware I own. I have three PC case fans pointing at the notebook, so the exterior is relatively cool, as are the other temp readings, but the CPU temp makes me nervous. Various things I've read suggest that about 85C isn't so healthy for the processor. Is that true?
I did try calling Apple Care, but they basically blew me off, suggesting I use external cooling. I could take it to the Genius bar, but that'll be a good 3 hours of my time, so I need to make sure it's worth it.
Comments?
Thanks.

See this article regarding runaway applications:
http://docs.info.apple.com/article.html?artnum=304882
and use that technique to make sure that no other heavy applications are crashing the party. There will be a number of smaller system apps and processes running; you're looking for a big hitter that you did not want.
I hear that the MBP is good for 100°C/ 212°F. I'm a little surprised that you're getting only 3800 rpm at 90°. Fans should be able to turn up to 6000 rpm. You may wish to download smcFanControl.
I use that program to increase the resting rpm from 2000 to about 2500 to give a head-start on any heat issues. At 2500, the fans are not noticeable unless I put my ear an inch from the the computer. The program also has a quick-change setting that lets you quickly bump the fan speed to the max of 6000 if things get too hot too fast.

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Message was edited by: xsdogs

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Idle sitting in OSX with nothing running 51-55 degrees, Idling in Parallels 8 (win7 x64) the CPU Die is at 58-60 degrees. Stress testing brings the CPU to 100+ degress easily with fans running at 5000+ rpm.
Even Idling in a game the CPU hits 102 celcius with the GPU running over 90.
Is this normal. If I put this on my lap, my legs are toast.
Have screen shots if needed.

I AM SO HAPPY. I figured out how to fix this!!!!
1. get Temperature Monitor by Bresink
2. get smcFanControl - google it
3. Install them and get smcfancontrol to display the RPM up by your name (top bar)
4. Check your temps with Temp Monitor, mine were about 95 (203 f) celcius when playing Minecraft
5. Click the temperature and RPM sign the smc put on your top bar
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