Activity resume issues (was Re: twenty issues with Paint activity)

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The double-clicking problem sounds like 
http://dev.laptop.org/ticket/7876 , "Double clicking an activity in the 
home ring causes 2 instances to launch".

I get different results from different apps, e.g. click Memorize three 
times, get three icons for three working instances, no doubled menus, 
and two gray circles.  Paint doesn't give me the gray circles.