Piriform, the maker of CCleaner, has pulled v5.45 of its suite from the website after users expressed concerns over the privacy changes in the application, the company, which was acquired by Avast last year , said. In v5.45, the company made it impossible to disable "active monitoring", and the privacy settings had been removed for free customers. Additionally, as BetaNews reported earlier this week, Avast also made it impossible for users to quit the software. Addressing these concerns, Avast said , "Today we have removed v5.45 and reverted to v5.44 as the main download for CCleaner while we work on a new version with several key improvements." The company added:According to stats shared by the company, CCleaner has been downloaded over two billion times. In a week, it is estimated to see five million downloads.