Within the DFM Event summuary I have entires, which when clicked on show no events.
Does this require a TAC case to access the DB to clear ?
There are no relevant errors. I imagine you just have some stale data in the EPM database. You can reinitialize this database with the following command, and that should clear up the portlet:
NMSROOT/bin/perl NMSROOT/bin/dbRestoreOrig.pl dsn=dfmEpm dmprefix=EPM