Firefox problem, wondering if related to new MBPro somehow

Have you tried running Activity Monitor (in the Utilities folder) to see what is using a lot of CPU capacity? The Process Name(s) may give you a tip as to what's generating enough heat to speed up the fans.

Are you streaming videos in Firefox?

Does this happen with any web page?

How many browser windows and tabs do you have open in Firefox?

FatMac made an excellent suggestion.

Howard

Hi Elmer.

You could try setting Firefox's cache size to 1 Mb. Preferences / Advanced / Network. It may or may not make a difference. Try emptying the cache too. Check to see if Adobe has an updated version of Shockwave Flash.

I've had Firefox crash occasionally but I don't think that it has ever crashed my MBP.

Is there any pattern to the crashes of your MBP crashes?

Howard

At best the utilities claiming to clean, optimize or speed up Macs are useless.

At worst, they are malware that messes everything up.

I've never used Mackeeper. I

I use OnyX to delete cache files and run the daily, weekly and monthly Macintosh maintenance scripts. I recently posted a screen snapshots of the OnyX settings that I use at the url below.

https://discussions.apple.com/thread/7268557?answerId=29068598022#29068598022&ac_cid=sa123456#29068598

I have used OnyX for probably over 7 years. I do this every couple weeks.

I run Disk Utility to check and repair permissions.

I would recommend that you install the Firefox Adblock Plus extension. In Safari, I use the Adblock extension. In Chrome, I use the Adblock Plus extension. In Opera, I use the Adblock Plus extension. I don't get popups in any of these web browsers and very few ads are displayed. When using the Adblock Plus extension, I also click on options and disable the option to allow some non-intrusive advertising.

Howard

Hi Elmer.

Here is 1 more thing to try if you are comfortable manipulating system files. Delete your Firefox profile and settings.

First backup your Firefox bookmarks.

Click on the bookmarks drop down menu.

Select show all bookmarks.

Click on the star icon.

Select Backup or select Export bookmarks to HTML.

N.B. Be very careful. Deleting important system files could cause major problems.

Go to the Finder.

Open the user Library.

Hold down the option key on your keyboard. Select the Go drop down menu.

Select Library. This is the library in your user profile.

Navigate to Library / application support / firefox

You may want to back up the crash reports folder.

Delete the firefox folder.

Open your hard drive icon.

Navigate to Library / application support

If you have no other Mozilla apps installed, delete the mozilla folder. If you have other Mozilla apps installed, move the folder to another location on your Mac (outside of the library).

Delete the firefox app.

Reboot your Mac.

Download and install Firefox again.

What did Activity Monitor show to be using a lot of memory or CPU?

Sorry that I missed 1 of your original questions.

"One thing, how can I be sure the most powerful graphics card in being employed, not just with my browser but when editing film with FCPX?"

I have no idea. Check the Final Cut settings. See if you can specify CPU usage within it.

Howard

Hi Elmer.

Restore your bookmarks using 1 of those 2 options after you reinstall Firefox. There might be some benefit in using the sites before your restore your bookmarks.

Do you have the latest versions of Java, Flash, Shockwave installed?

How much ram is installed? How much ram is Firefox using? How much ram remains free?

Howard