Cannot Replay Cached Video in IOS5 Safari with HTML5
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I'm working on a site using cached video in HTML5. It works fine on a laptop using Safari. When I test on mobile Safari using IOS 5, I see the following:

 1. Site works and plays video fine when 1st loaded.
 2. I get prompted if I want to cache 10 MB of data on my iPhone. I say yes. (Cache size in Safari was 9.5 MB) Website data page in mobile Safari settings confirms 9.5 MB are cached.
 3. When I try to return to the website in a new tab, the HTML and images load, but for the video I get a play button with a line through it.

This happens regardless of whether I turn Airplane Mode on or off.

