From the post on the french forum: they were generating a 21 characters string from 3 different sources of random (each source contributing 7 characters to the

From the post on the french forum: they were generating a 21 characters string from 3 different sources of random (each source contributing 7 characters to the final string) and it looks like that among these 3 sources, 2 of them were flawed and were not really random. They say they fixed this flaw by now generating 64 characters random strings from 2 sources of random which they think secure.