This seemed to happen again with a recent Firefox update on 13.04.
E.g. I add a 'w' keyword for Wikipedia, so typing 'w Ubuntu' in the URL bar does a Wikipedia search directly. After each upgrade, the keyword is gone.
This seemed to happen again with a recent Firefox update on 13.04.
E.g. I add a 'w' keyword for Wikipedia, so typing 'w Ubuntu' in the URL bar does a Wikipedia search directly. After each upgrade, the keyword is gone.