MT 3 stalling on rebuild

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I upgraded most of the sites I publish or host to Movable Type 3.15 a few weeks ago and for the most part the transition was fairly painless, but for some reason the Edgewise blog gives me trouble when I try to rebuild older pages.
That is, new posts go up as they should, but any attempt to rebuild the site to push design changes through stalls out. The little pop up window says it’s working on the first 1-40 individual entries and then it hangs and never updates.
I’m not the only person having this problem. I posted about it on the MT Community Forum and someone responded to say that he or she was having the same problem. Oddly, it’s just that one blog, though, and I have no idea what’s causing it.
No one has answered my plea on the forum, which is why I’m putting this out here more publicly.
Ultimately, I may export the blog, recreate it and re-import it, but I’d rather not go to all that trouble, especially if that wouldn’t solve the problem.
I don’t think it’s my biggest blog, in terms of number of entries, by the way. I’m pretty sure that would be this one, which seems to rebuild just fine.