Pixy,

Please forgive me for wording my original question poorly. I was indeed talking about rolling a 401k from a former employer into an *existing* IRA... in other words, mixing the money. I had heard the disadvantage to this was not being able to roll that money *back* into a future employer's 401k plan.

So my question was: Why would I want to do that anyway? Other than the loan thing (which I agree with you about, I'd never want that), what other advantage could there be to rolling that money out of the IRA (which I can invest as I wish) and into another 401k? I gather from your reply to me that there is no advantage.... and I should be able to mix this money without worrying about it.

Thanks again!