Yes, yesterday, I blacklisted both the r592 and r852 modules and its now been almost 24 hours without encountering the excessive logging problem. I am going to watch and wait before I disable DMA for the two modules. I want to see if blacklisting both RICOH devices solves the problem by itself. However, if/when the excessive logging next occurs then I will immediately disable DMA to see if that helps. Thanks again for your support. Let me know if you have any other recommendations. I will report back with my findings. Gordon