phpMsgrStats caches the gathered statistics in a database, I’m sure Microsoft wouldn’t like it if people were accessing their servers in such a way phpMsgrStats does every time someone comes to the page.
The database is automatically updated when the first user after midnight visits the page, the update rate maybe increased in a future release of phpMsgrStats.
Its coded by GZ, who is appearantly being very busy these days 
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I would like to have the latest mesenger version