How’s that whole melting MacBook thing going?

A lazyweb inquiry:

Does the current run of MacBooks (not the Pros) still have any sort of serious overheating problem?

MacBook

We’re pretty close to replacing a certain laptop in our stable (not mine) and the question keeps coming up.

So what’s the deal? Did this problem every get solved? Do we have months of scorched desks in our future?

(Yes, I’m aware of the rumor that the new new hotness with the touching and whatnot might be built into the MacBook come October. Waiting for that isn’t really an option at this point.)