Surfers outside the US have been unable to visit the official re-election site of President George W Bush.
The blocking of browsers sited outside the US began in the early hours of Monday morning.
Since then people outside the US trying to browse the site get a message saying they are not authorised to view it. The blocking does not appear to be due to an attack by vandals or malicious hackers, but as a result of a policy decision by the Bush camp.
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