Of course, if you need extra help with any of this, we have a community of volunteers. And contains fixes for many problems that could slow down your Firefox.

On my Macbook, Firefox is slow. It takes about 30 minutes to start up - when I wake up, I start it, and once I am done breakfast, it's usually done. And, it takes a super-duper long time to shut down - I haven't shut it down one, I just force close it now because it takes so long. It shouldn't be - the rest of the applications on this machine are really fast, and Safari starts instantly - but I love Firefox and don't want to leave it. How can I fix this problem? Edit: I disabled all extensions which makes it start up almost instantly now, but it still will not shut down. 30 minutes to startup means there is something wrong and my first guess would be an extension that does not behave. Mbam machine error 7.

I would try to disable all extensions and see if it is still slow. The easiest way to do this is to start Firefox in safe mode. Here is quote from the how you can do this on your Mac: • Close down Firefox completely: On the menu bar, click the Firefox menu, and select the Quit Firefox menu item. • Hold down the Option key, as you start Firefox • Firefox should start up with a Firefox Safe Mode dialog.

If that helps you can start in normal mode and disable your extensions one after another until you find the culprit. If it does not help I would try to start Firefox with a fresh profile: • Close Firefox and backup your profile • Start Firefox (it will create a fresh profile) • Restart Firefox to see if the problem still exists • Close Firefox and restore your profile Backup and restore of the profile is really simple, there is a detailed explanation at. You might be (have been) suffering a really large places.sqlite file (holding your bookmarks and history, which may already have expired). You can compact that: Quit Firefox, wait until you're sure it's no longer running, and then: cd ~/Library/Application Support/Firefox/Profiles/*.default/ ls -lh places.* sqlite3 places.sqlite 'vacuum;' ls -lh places.* When the cd-command fails, the 3rd line will in fact create a new 1024 byte database file places.sqlite in the current folder.

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That file is not used by Firefox of course, so may be deleted. I had exactly the same problem with Firefox on a MacBook. I had no extensions for Firefox, no specific extra downloads, so that I could not say what was causing the problem by doing a safe mode start up.

I backed up my profile, and removed two files from my profile folder: the places.sqlite, which was like 8Mb then 3Mb after the vacuum command (it did not help by the way), and the urlclassifier.sqlite, which was like 5Mb. And now, everything works like before. And I did not lose any bookmarks or toolbar bookmarks. I don't know how Firefox uses these files but perhaps they should be cleaned off from the profile folder once every few months to keep Firefox in good shape.

Version 57.0, first offered to Release channel users on November 14, 2017 Brace yourself for an all-new Firefox. It’s over twice as fast as Firefox from 6 months ago, built on a completely overhauled core engine with brand new technology from our advanced research group, and graced with a clean, modern interface. Today is the first of several releases we’re calling Firefox Quantum, all designed to get to the things you love and the stuff you need faster than ever before. Experience the difference on desktops running Windows, macOS, and Linux; on Android, speed improvements are landing as well, and both Android and iOS have a new look and feel. To learn more about Firefox Quantum, visit the. Making Firefox look, feel and perform faster was no small feat.