No charging with computer on

If I use my MacBook Pro for a while with battery (more than 50% full), and then I plug it to charge the battery, led goes green, then orange (charging) and then off. No way to charge the computer. I need then to shut down the computer wait a while and plug again the cord for charging (with the computer off).
Any ideas?.
Thanks.

You don't mention if you have a MBP which needed to have the battery replace.
Have a look at these two articles to see if they help:
http://docs.info.apple.com/article.html?artnum=305364
and
http://docs.info.apple.com/article.html?artnum=304301
Hope that helps
Regards
Paul

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No charging with computer on

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