Hi, the web content cache stores files used to construct pages. It is easy to clear, but I suspect the information is stored in a different bucket such as credit card autofill, form autofill, etc. Hopefully the following articles help with each of these: * [[How to clear the Firefox cache]] * [[Automatically fill in credit card and payment method data on Web forms]] * [[Control whether Firefox automatically fills in forms]] Were you able to track it down and clear it?