Opera Mini №1 in the AppStore in almost all countries

Link to current statistics - www.apple.com/euro/itunes/charts/apps/top10appstorefree.html

Update
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1 million times downloaded on the first day.

For reference: the widely awaited Skype for iPhone was downloaded 1 million times in the first two days after appearing in the AppStore, and it took almost three weeks for the application from PayPal to overcome a million installation, while having 81 million army of regular users.