Exactly:
Package: google-chrome-stable
Version: 21.0.1180.89-r154005


I updated to that version and nearly everything failed to render properly. Linux and Mac. Bonus, the browser would lockup on extension errors...

Currently running:
Package: google-chrome-beta
Version: 22.0.1229.26-r153823

And everything, including the extension I am running work fine again.