I have been using FF for many years, recently it locked up my ubuntu 12.04 and 16.04 a few times really badly(used all memory and swap space before OOM kicks in, rendered the machine totally unusable for 10~30 minutes, I always ended up cold-boot it). Two weeks ago I decided to switch to Chrome, so far so good.

While I love FF and hope it gets stronger, its market share is sadly dropping sharply, I recently read it's about 10% of the market share? That's a red flag considering Mozilla does not have the deep pocket to compete with Chrome and the awakening IE, and Safari.

The future does not look rosy for FF I am afraid.