I set up time machine and let it start backing up for the first time....I was up for about an hour whilst it was backing up and it did about 400mb. I then went to bed and woke up and it had done 5gb. 5gb in about 8 hours. It was ridiculous. I am backing up about 50 gb at the moment. I am yet to have a full back-up because it takes way too long. I end up canceling it. Is there something i am doing wrong?? I am so confused as to why it is taking so long.