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Some browsers (lynx) do not support this tag at all, and some (Opera?) allow it to be disabled.
The Batch API, and any other code that uses a meta refresh element, must print a visible message on the page that informs the user they are waiting to be redirected, and provide a link to manually follow the redirect.
This is common fallback behavior; see SourceForge download links and the 404 message at http://www.wikipedia.org/Article for two examples.