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I'm running ICS 4.0.3, and I notice if I have the Web app (default browser) open, but not in the foreground, it still uses a lot of CPU (25-50%), based upon the built-in Android Task Manager. Other apps are using 0%. Looking at my battery usage, the Web uses about 33%, even when my phone is inactive.

Is there any way I can prevent the Web app from using so much CPU when it is not in the foreground, without using the back button to exit?

I'm running on a Samsung Galaxy S2.

Edit: If the best answer is to use a different browser, I am open to that suggestion.

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I have reason to believe that this may be a bug caused when the Web app has a large number of bookmarks. In System Settings -> Accounts and sync I turned off Sync Web under my Google account. Then I went to Manage Apps, clicked the All tab, and hit the Clear Data button.

This reduced the usage of the Web app to 1% when in the background.

When I enabled Sync Web to import all my Chrome bookmarks, then disabled it, the problem showed itself again. I reproduced this problem twice.

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