I had read that it was tax-related, something about a higher tax on "video cameras" in Europe, and "30 minutes" was the defined limit. Heat would make some sen

I had read that it was tax-related, something about a higher tax on "video cameras" in Europe, and "30 minutes" was the defined limit. Heat would make some sense too, but it's interesting that Canon and Nikon would both have the same heat issue that magically manifests after 29:59.