Two YouTube downloaders crash 3rd worked [Solved]

[nooby]

Yes very good advices. I trust it is the addons that I use that have not
updated to FF19 so one or two is still back on FF17 that could explain
why mine always get back to 17

Thanks for the description on .cache I have one on /mnt/home
so seems FF is using that one because I still have same savefile
size as yesterday.