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Last December Google shut down the Google Translate API v1 dialect-http uses (see http://code.google.com/apis/language/translate/v1/getting_started.html). The "autotranslate" button therefore stopped working.
The new API is available as a paid service only (see http://code.google.com/apis/language/translate/v2/getting_started.html).
So dialect-http should pick and implement one of these options:
1) implement Google's new API and and enable the button only if we have an API key in the configuration
2) implement some other API, possibly a free one?
3) remove the button entirely