Stuck on loading database performance tab

Hello all,
We have a 10.2.0.5 Grid Control on Solaris monitoring oracle 10g RAC on Solaris SPARC.
After successfully logging in to the target database via
Grid Cotrol -> Targets -> Databases -> <DB> -> Performance Page
The performance page would get stuck on loading forever.
Other database tabs such as Server, Availability and Schema are functioning normal.
Any help would be greatly appreciated.

yes we do have the correct license for the performance diagnostic tool. it works on other databases but not on this particular one. here's some of the errors we're seeing from the agent log:
2009-12-01 04:40:13,405 Thread-542 ERROR recvlets: Error setting threshold for m
etric wait_sess_cls, target evt1.prod.evite.com oracle_database
2009-12-01 04:40:13,405 Thread-542 ERROR recvlets: Tried to set threshold on met
ric wait_sess_cls, target evt1.prod.evite.com oracle_database,
for uninitialized recvlet AQMetrics
2009-12-01 04:40:13,406 Thread-542 ERROR recvlets: Error setting threshold for m
etric wait_sess_cls, target evt1.prod.evite.com oracle_database
2009-12-01 04:40:13,406 Thread-542 ERROR recvlets: Tried to set threshold on met
ric wait_sess_cls, target evt1.prod.evite.com oracle_database,
for uninitialized recvlet AQMetrics
Thanks.

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====================================
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JB
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Stuck on loading database performance tab

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