You mean after you load a saved game?  Because, I have that problem too but each time it happens there is some sort of mini dump.  If not, then nevermind.

My computer is not overheating either, I'm running Windows Xp x64. I get the same error. as you Onicrom

Edit:

Sins cause a memory dump into my temp files I have a full list of all the dumps of you are intrested.

If it's Entrenchment that's crashing around game start, try dropping your texture quality settings (the entire top row). This fix has been suggested by IC (the Entrenchment beta is currently not very optimized so there are memory issues) and works for those affected by it. No guarantee that it's the cause of your guys' crashes, but it's worth a try.

Once I changed the detail on everything from highest to high setting the problem fixed it's self.

i tried that too and it worked for a few hours but it did eventually crash. I got an error message saying that sins requested a runtime to be executed in an unusual way and needed to be closed. 

So far this seems to be working great now AND now the mines don't fluctuate for me.  Before, they would fluctuate between in and out of phase so it seems, for at least now against TEC, with lower settings the mines won't being in flux.