It seems that recent stats are not showing in EM and it might be the issue with agent.
stop and start agent ( it may resovle the issue)
emctl stop agent
emctl start agent
and check weather agent uploading or not in the output of below command.
emctl status dbconsole
hope this solves.
Regards
Satishbabu Gunukula
Click here to see [Connect by nocycle query gives wrong results|http://www.oracleracexpert.com/2009/08/connect-by-nocycle-query-wrong-results.html]
Click here to learn [Upgrade 8i to 10g|http://www.oracleracexpert.com/2009/08/upgrade-oracle-8i-to-10g.html]
http://www.oracleracexpert.com