Tom Mercado suggested I post this topic: The program ccleaner of piriform tries to clean up the download history of firefox, but mbam blocks this and claims that this file: AppData\Roaming\Mozilla\Firefox\Profiles\57moo7ok.default\downloads.sqlite is a trojan downloader. The strange thing is, it does not always do so ... However, on virus total the file is 100% safe, and a manual scan by mbam also says there's nothing wrong. What does ccleaner do that makes mbam block the cleaning process? And can this please be automatically ignored? Tom says it probably is a heuristic hit. Ed