Note 395013.1
IAS shown as Down in Grid Control even though all of its Components are shown as up
Take a look through that as there is a specific file that you need to copy to another folder.
Exceprt from the note:
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The Bugs that cause the problem will be fixed in release 11 agents.
To implement the WORKAROUND to this problem, please execute the following steps:
1. Copy the file <AS_HOME>/sysman/admin/scripts/formsinit.pl to <AGENT_HOME>/sysman/admin/scripts/
formsinit.pl