If a report submitted by the European commission has to be believed, the Internet may not have enough addresses for users soon. That may happen in 2010 as well.

New Technique IPv6 makes No Internet addresses by 2010
http://gizmopassion.com –
Internet could run out of Addresses next year
http://www.foxnews.com –
The survey, conducted by the European Commission, found that of the 610 government, educational and other industry organizations questioned across Europe, the Middle East and Asia, just 17 per cent have upgraded to a new Internet addressing technique called IPv6.
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