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OS X 10.6.6 breaks Macbook laptops? – beware upgrading…

Short story: if you try to do *any* iPhone development with a 1st/2nd/3rd gen Pro or Air right now, you may screw-up your laptop – massive overheating. I did. My Air is now almost unusable – thanks, Apple!

Apple is currently:

  1. Forcing all iOS developers to use Xcode 4, even though it only went live 1 week ago
  2. Forcing all Xcode 4 users to run OS X 10.6.6., even though it only went live a couple of months ago
  3. …and 10.6.6 appears to have an overheating bug

For me, I installed the 10.6.6 update, and immediately my laptop went into massive overheat. Nothing brings the temperature down. Multiple processes are being run on high (up to 100%) CPU that normally do not show up, the load factor is enormous. CPU temperature over 80 celsius, with nothing but a single firefox window open. Sigh.

I believe this is a bug with the much-praised “make OS X use your dual-core CPU to Da Max” that came in recently. Only, that’s a really stupid idea on laptops, especially when running on battery, with no apps that need the CPU)

(NB: that was the same window, with the same tabs, as before I upgraded to 10.6.6 – I saved / restored the session. Whatever’s broken, the 10.6.6. upgrade currently seems the most likely cause)

Sadly, there’s no way out (can’t downgrade) and no way forward (no patches available yet).

i.e. the bad-old-days of Microsoft’s “auto-updates” and the critical bugs they often caused. At least Microsoft had the excuse they couldn’t test all 100,000,000 combinations of hardware – Apple doesn’t. They’ve only got a few hundred to worry about :(.

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