Is this about the launch bar at the bottom of the built-in about:home page?

Add code to the userContent.css file.

• http://kb.mozillazine.org/userContent.css

@-moz-document url(about:home){
 #launcher { display:none!important; }
}

• create the chrome folder (lowercase) in the <xxxxxxxx>.default profile folder if this folder doesn't exist
• use a plain text editor like Notepad to create a (new) userContent.css file in the chrome folder (file name is case sensitive)
• paste the code in the userContent.css file in the editor window
• make sure that you select "All files" and not "Text files" when you save the file via "Save file as" in the text editor as userContent.css.
  otherwise Windows may add a hidden .txt file extension and you end up with a not working userContent.css.txt file

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

• Help -> Troubleshooting Information -> Profile Directory:
  Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder
• http://kb.mozillazine.org/Profile_folder_-_Firefox

Sorry, the photo didn't come out. The banner is gray background stating "Please update your account to enable 3rd party hosting." It initiates from Photobucket an account that I have closed but the banner is still there.

Hi Photoman001, thank you for the screenshot!

I think that is added to the built-in home page by this userstyle:

https://userstyles.org/styles/82256/about-home-lavafox-blackfox-orion-s-belt

The style calls an image of a little square from Photobucket and that seems to be causing the large advertisement to appear. You can take that out if you like. Here's how:

Open the Add-ons page. Either:

• Ctrl+Shift+a (Mac: Command+Shift+a)
• "3-bar" menu button (or Tools menu) > Add-ons
• type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click User Styles. Then find "about:home - LavaFox & BlackFox" on the right side and click its Edit button. That should open the style rules in an editor, usually in another tab.

You can use Ctrl+f to open a find bar, type bucket and press Enter. From what I can see, there's only one line:

background: rgba(0,0,0,.8) url("http://i930.photobucket.com/albums/ad144/zigboom/square_000000_181818.png") !important;

Remove everything from url( to ) so it reads:

background: rgba(0,0,0,.8) !important;

Then click Preview and open the home page in another tab to confirm the bottom no longer has those ads. Then you can click Save to update your saved version of the style.

I'd like to thank you both for your input.

cor-el's method seemed to work. there is no longer a banner although the quick access buttons have also disappeared but i never used them anyway so I'm fine with that. A gain, thank you both.

If you decide you want the Launcher section back, you can try editing the user style, or wait for an update (I posted the problem for the author).

Oh my god!

You two guys are gods to me!

Not only is the banner gone, but the quick launch buttons are back too!!

Thank You, Thank You, Thank You, Thank You!!!

I thought I was going to have to live with that thing for ever!!

YOU GUYS ARE AWESOME!!!!