Quote Originally Posted by Morgonte View Post
Yeah, actually I logged on now to write that ProfileCleaner set to delete secmod.db seemes to solve the issue. Good work! I shall wait until next update of firefox until I mark the thread solved, though.
Glad to read that. This problem comes and go with different Firefox versions, so is a good a idea to disable the extension after Firefox updates and test if the problem persists. There is no reason to use it if the problem goes away. However, keep the extension installed, in case a new version introduces the problem again.