Well, I had the TEC/water cooling, E4300, and eVGA 680i A1 up and running for all of a day. Didn't even get to overclock.
First, the explanation. I recently purchased d44ve's whole TEC setup, E4300, and the 680i, all for $400. As shown here:
http://forums.techpowerup.com/showthread.php?t=36599
Well, after receiving it, and during setup, I spilled some Fuid XP into the Meanwell PSU. It took a little while, but I got it up and running again. Finally got it all put together and running last night. With one hitch, I didn't have a relay kit for the aux psu, so it was plugged directly into my power strip.
The Meanwell runs both pumps and the TEC, but the fans run on the main psu. I ordered a relay kit last night, to be on the safe side. I figured I would run it sans relay, until the kit arrived. I would just be careful to remember to shut off the power to the surge protector, whenever I shut down the computer. As I was about to find out, there was a major hole in my theory.
Earlier today, I fired it all up, and started my Windows updates. I then left to run some errands, leaving the computer to do it's thing. Well, apparently, the power went out while I was gone. It also returned, before I did. You're probably thinking, "what's the big deal?". Well, the computer was off, but the power strip's switch was still on. Meaning the Meanwell, and thus the TEC and pumps fired back up, but not the rad fans. Apparently, a 3x120mm rad cannot cool a 245W TEC passively.
I came home to a house filled with acrid smoke. It got so hot, it melted the acrylic top, the insulation around the socket AND the back of the board, the plastic bits of the socket itself, and it made the IHS come off the chip. What you may not be able to see in the photos, is that the cpu socket got so hot, it actually warped into a concave shape. And there are actually blisters in the top layers of the chip's pcb. I should also note, that I had to pry the chip from the socket with a screwdriver.
Also, when the acrylic top's seal let go, it sprayed the entire inside of my computer down with coolant. So my ram and 2900XT could also be dead. I think I might be ok in that respect tho, as there wasn't any power going to the 2900 and ram, due to the computer being off. I pulled apart the 2900 and cleaned it with non-residue contact cleaner, and I'm gonna let it dry for a few days, to be on the safe side.
I would be totally screwed, if my dad didn't offer to let me buy back the DFI and 6000+ combo I sold him. He decided to take the Intel plunge.
Needless to say, I don't think I'm gonna be messing with TEC again. Anyone want to buy a Meanwell 320W psu, and a Swiftech relay kit for it?
Here's the aftermath: (keep in mind, this is after I cleaned a good portion of the mess.)
. uh, you've got home owners insurance right? might want to explore exploiting such if you do 
. my last TEC solution (a Swiftech MC370-2) ended just about as badly as yours but for a time i had my K6-III 450 running at 600MHz. every time i think of using a TEC i think of the sparks shooting out from my system...
Well if you going to blow some shit up thats the way to do it, to bad you wernt there to see it happen must have been impresive... Sorry for your loss 
