Note that the names of prefs are case sensitive: browser.urlbar.maxRichResults

Maybe Ubuntu is overriding that setting.

Start Firefox in Safe Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).

• Don't click the Reset button on the Safe mode start window or otherwise make changes.
• https://support.mozilla.org/kb/Safe+Mode

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

I entered into safe mode and check the addons- themes it it was shwoing just default 15.0 disabled, but now how do I get back to normnal it all seems ok, and do I reset the browser.urlbar.maxrichresults?

ray

What is the current value of the browser.urlbar.maxRichResults pref?

If that value is the default and you still get less than that then something else is wrong.

Is it still happening in Firefox Safe mode?

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Create a new profile as a test to check if your current profile is causing the problems.

See "Basic Troubleshooting: Make a new profile":

• https://support.mozilla.org/kb/Basic+Troubleshooting#w_8-make-a-new-profile

There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.

If the new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.

See:

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

I am not sure about this safe mode as I tried it and I cant create new profile to check, can you tell me the steps to do so, or is it easy ro re-install firefox 15 in .deb format

ray

You can use the Profile Manager or use the Reset button on the "Help > Troubleshooting Information" page to create a new profile. The Reset will move the current Firefox Profile Folder to the desktop, so you can't use the Profile Manager to revert to that profile (it is removed from the profiles.ini file that registers all profiles).

• http://kb.mozillazine.org/Profile_Manager
• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

cor-el,

I cant find the Reset button(tab) on the help tab, so not sure where located?

ray

You can only find the Reset button on the Troubleshooting Information page if you are using the default profile as set via Default=1 in the profiles.ini file.

• http://kb.mozillazine.org/profiles.ini_file

If you do not have the reset button then either use the Profile Manager to create a new profile or use the Profile Manager to start with the current default profile to get the reset button in Firefox.

• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox

cor-el,

this is what I am asking the steps to use and activate the profile manager so as to use the reset buuton, or would it be easeir to just re-install the ff15/ or remove it and reinstall ff14 like I had before as I have ff14 as a .deb app?

ray

You can modify a copy of the Firefox desktop shortcut and add a space and -P to the command line to start Firefox with the Profile Manager.

See also:

• https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile
• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Cor-el,

Becuase I am a novice, I dont uinderstand what you are saying, that is why I am asking for steps to follow as the previous "You can modify a copy of the Firefox desktop shortcut and add a space and -P to the command line to start Firefox with the Profile Manager. " what you mean and how as I now have up ff15 but what to do?

ray