I've recently re-modded the cooling of my x41 Tablet. If it is of interest to anybody, I have documented it with photos and a written little article viewable here: http://recat.pccloud9.me/blog/2012/01/2 ... un-colder/
For anybody who doesn't want to go there, I'll summarize my efforts here:
My computer would peak at roughly 75 degrees Celsius from only a few minutes of burn-in. I feel that is a bit too hot, So I replaced the relatively crappy alluminum pad and put in some Arctic Silver with a heat-spreader scrapped from an old pentium 4. Now the CPU peaks at much lower temperatures, of only 65C, ten degrees lower! I also plan on under-volting once again. (new motherboard, new CPU, new rules! xP)
I had recently repaired my tabletPC after previously damaging the motherboard irreversibly by replacing it. I'm enjoying this computer once again, Wrote the article with it. Such joy working with these machines.
Proud owner of: IBM A22M, IBM R30, IBM X41T, IBM X60, Lenovo T400, Lenovo X200S ... and Texas Instruments Extensa 512