Apple released the latest version of its iOS platform to the public last week on October 12th and within five days, the platform accounted for more than 20% of all iOS traffic on Chitika’s ad network. Chitika Insights, the network’s research arm, this week revealed the results of a seven-day study that monitored iOS 5 web traffic. On October 11th, the day before iOS 5 became available to the public, the new build was barely a blip on the radar. IOS 5 accounted for 10% of the impressions served to Apple’s mobile devices on the 14th and by the end of the day on October 17th, it claimed more than 20% of iOS impressions. “The sudden surge in iOS 5 adoption is likely due to the fact that that a large portion of Apple consumers fall under the category of “early adopter’, ” Chitika’s Ryan Cavanagh wrote on the company’s blog. Cavanagh also noted that iOS 4 is currently still the predominant version of the platform on its network, but he expects that to change soon.