Got the new update from the repos today. Can't say I'm impressed, 4 of my plugins don't work with it and all it has is a couple of bug fixes.
GhostMjr it is definitely worth upgrading to FF4 unless you depend on a plugin it doesn't support. FF5 is not worth having, it should be called FF4.1 or even 4.0.1
EDIT: FF4 will no longer receive security updates. http://news.slashdot.org/story/11/06/22/172229/No-Additional-Firefox-4-Security-Updates?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Slashdot%2Fslashdot+%28Slashdot%29
GhostMjr it is definitely worth upgrading to FF4 unless you depend on a plugin it doesn't support. FF5 is not worth having, it should be called FF4.1 or even 4.0.1
EDIT: FF4 will no longer receive security updates. http://news.slashdot.org/story/11/06/22/172229/No-Additional-Firefox-4-Security-Updates?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Slashdot%2Fslashdot+%28Slashdot%29