"The use of the storage mutex to avoid race conditions is currently considered by certain implementors to be too high a performance burden, to the point where allowing data corruption is considered preferable. Alternatives that do not require a user-agent-wide per-origin script lock are eagerly sought after."
It's not a question of mutex versus data corruption, but of implementation: Database storage is served by SQLite. LocalStorage would be better served by Tokyo Cabinet: http://1978th.net/tokyocabinet/. I doubt the current localStorage implementation is better than the current Tokyo Cabinet implementation. Joran Greef
