With the upcoming release of patch 5.0.4, all items within the Logs Directory for World of Warcraft will be deleted. It is advised that if you have WoW Combat Logs or WoW Chat Logs that you would like to save, that you do so prior to the release of the patch.
These are logs a lot of people use either for RP purposes or combat parsing through their addons. (Generally speaking.) If it's not something you use or save specifically for your use, this won't impact you. :)
