Using RDBMS 10.2.0.3: Have You Experienced Enq: Hwm - Contention?

We go hit by this event recently and would like validate the scenario and the proposed solutions against your experience if you encountered it. This event affected a LOB segment in an ASSM tablespaces in a RAC database.

This is what I have found so far ...
1)  As temporary workaround, manually add extra space to the LOB segment.
2) Bug 6376915 (affecting 10.2.0.3)
- >= 10.2.0.4: EVENT="44951 TRACE NAME CONTEXT FOREVER, LEVEL < 1 - 1024 >" - set PCTVERSION to 100: but never able to use blocks freed by updated blobs

3) Bug 6413373 (LOB in RAC and ASSM) - Lob HW enqueue contention: LOBs in ASSM tablespaces
    - Set FREEPOOLS is set to a value >= the number of instances
    - Partition the table into a number of partitions sufficient
4) Try alter system set"_insert_enable_hwm_brokered"=false

If you did encounter this issue, what was you rca and final resolution?

Thank you.
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