I've used version 29 for 24 hours and then I had to downgrade back to 28. 29 seemingly randomly corrupts tabs (with a white screen), when they are loaded after a session restore for example (and the history doesn't show the adress they were at for some reason, so I had to manually find the URLs). Also, firefox 29 crashes after 5 minutes. Almost exactly 5 minutes. The layout looks completely the same as other browsers (another major disdain ... like the absence of the download manager button, having to find it everytime in the context menus instead). The memory leakage in 29 is insane (over 1 GB of RAM usage after starting ? What the .... ? 28 has usually around 250 MB). Due to 29 being unusable, I had to revert into 28. If the browser forces me to upgrade into 29, then I will be forced to uninstall it and use a different browser. Also, I am not the only one with the same problem and the same solution in the case of being forced to use 29 by some automatic update if the case arises.