I have been developing a mobile web app which takes advantage of the
cache manifest for offline capability. It works well on iOS devices,
however, I have been testing on Android 2.2 (Galaxy Tab) and this is
what happens:

1. The cache manifest download correctly. (all of the files in the
manifest download)
2. Those files are used when rendering the page and offline support
does work.
3. I then update one of the js files and change the manifest file.
4. I refresh the page and it recognizes that the manifest has changed
and re-downloads.
5. However, the re-downloaded files are not used in the page (even
after several page refreshes)

Note: at seemingly random intervals the new files will be used in the
page. (could be after 3 refreshes, or 10, and sometimes never.

I have disabled the cache manifest for Android devices until I can get
it to work reliably. (still works for iOS)
http://www.EDUCAUSE.edu/mobile

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