I really try to like Firefox, but the last 5 minutes really captures the kind of papercut that happens often:

- I open a new tab and firefox informs me it has updated itself and needs to restart and won't allow any further operations until it does so.

- Fine, I close and restart.

- I reopen Firefox to find a brand new sponsored weather widget on my otherwise blank new tab page - from a source I would never otherwise visit.

Thanks for breaking my flow and the privacy breach, I guess.