I'm using Iron 49.2600.0 on XP Pro, and yesterday discovered that neither BleachBit nor CCleaner seems able to delete the 'chrome://cache' contents. Also neither does the 'Settings' within the browser. Anyone have an idea how to sanitize these contents? Also, any way to disable 'DNS-prefetching'? I'm preparing to deploy a VPN, and apparently this leaks the ISP address.