Firefox starts and then it stops to work and I have to force close it. I tried to run it in safe mode and I reset it but nothing works.
Someone else has the same problem?
I found the problem, it's related to websnapshot extensions. I used to use picuzu shooter, when I take a snapshot firefox freezes and I have to delete the .mozilla directory. I also tried with other extensions:
I found a solution (or better a workaround). I can take the screenshot, when I save firefox hangs. I don't know the relation but the process gvfsd-metadata starts to use 100% of CPU. I kill this process and all is back to normality. Not so confortable but it works!
no problem here; Ubuntu 12.04 and FF 19
Try to remove firefox with Synaptic (or the softwarecenter) and choose complete removal. Then install Firefox again via the softwarecenter.
Make a back-up first of your bookmarks etc.