Hi, I have a refurbished ipad1 32gig ios 5.0. Lately while using Safari, usually 1-3 sites open On seperate tabs, I often get a sudden black Screen and then pop to the desktop. If I tap On the Safari icon the website I was on does Reload and restart does not seem necessary. Any ideas on why this happens ? I usually try To make sure I only have the Aps open that I am using at the time to cut down on RAM use. Appreciate any advice !