I have a mid-2012 Macbook Pro, which lately I have not done anything with other than surf the web. I have noticed that my storage capacity has significantly decreased. I had a 512GB SSD, and was only using less than half of it (about 200-210GB free), up until maybe a few months ago when I last checked. I recently enabled Time Machine, and soon after, I only have about 70-75GB of free space. Any ideas? I looked at the storage, and it says about 250GB are used for 'Other'