There is also a recommendation from RIM to not store them on the system drive due to both the size and the activity. We have ours stored in a D:\BESLOGS folder. Also, there are 2 logs that can't be set to delete automatically based on aging (ALRT and MDAT), so it is still necessary to go in and periodically delete the older folders. I have asked for them to allow us to set these as well for auto delete in a future release. I ask others to do the same if you want to keep your administration as simple as possible.