I am getting lots of "MRxSmb" warnings while we are doing database work from a workstation to a Server. We use shared directories Mapped to a Drive Letter. We used shared directories in the /program files/application_directory, then moved it to c:/application_directory with worse results and finally to D:/application_directory where the application is now quite reliable, but still some of these warnings. We used Drive mappings on the C: drive which seem to be unreliable as they would come and go and we had to reboot. It's all very annoying!