The optimization does improve Windows performance - In a review of UpdateStar Kahuna on the Kabel Deutschland website the editors summarize: "A faster and cleaner computer is what Kahuna 3 promises. It offers seven optimization modules with many functions and tools "- Kabel Deutschland, May 2010

Test result: "Good" - In a review for UpdateStar Kahuna 3 the German computer magazine PC-WELT the reviewer praises the "many functions - seven main modules with a number of tools". PC-WELT continues: "Secure deletion of data is relatively slow, but thorough" and "The optimization can improve Windows performance" - PC-WELT, April 2010