12.04, chrome only, random youtube vids say: "This video is currently unavailable."

view full story

http://askubuntu.com – I've seen a few similar questions on the web, but none of them solve the problem for me. Essentially random youtube videos won't play in the chrome browser, but work in firefox just fine. Sometimes they even work in chrome on a website that displays the video still hosted at youtube, but won't work if I visit the actual youtube page! Ubuntu 12.04.3 LTS Chromium: Version 30.0.1599.114 Ubuntu 12.04 (30.0.1599.114-0ubuntu0.12.04.3) Chromium plugin: Shockwave Flash 11.2 r202 Here's a few things I've already tried: uninstall and reinstall all flash packages disable all other chromium plugins (HowTos)