LibreOffice crashes on startup

For anyone who has suddenly found that LibreOffice crashes during startup (no error message) and, like me, couldn’t figure it out for ages: LibreOffice >3.3 isn’t able to detect Java Runtime Environment version 1.7.x, so if you upgrade Java don’t uninstall the 1.6.x version.

There’s a bug report. It’s going to annoy a lot of people when Java 1.7.x goes mainstream.

Edit (4th January 2012): This issue has apparently been fixed in LibreOffice 3.4.5 (which is currently in beta, and due to be released before the end of the month).