Serialization error in Websphere 7 using Mojarra 2.1.22

This error is occurring repeatedly in clustered production Websphere 7.0.0.25 environment with memory-to-memory replication turn on:

[2/27/14 11:06:00:741 EST] 00000006 WASSession E MTMBuffWrapper storeObject SESN0200E: Caught Exception while trying to serialize.

[2/27/14 11:06:00:741 EST] 00000006 WASSession E MTMHashMap handlePropertyHits SESN0202E: Failed to replicate attribute com.sun.faces.application.view.activeViewMaps

Any insight into how this error can be addressed or what impact it might be having on the overall stability of the production environment would be appreciated