hello Photoman15, maybe the file in your profile folder that holds the UI customizations got corrupted. please try to reset it: go to the firefox menu ≡ > help ? > troubleshooting information, click on profile folder/show folder and close all firefox windows afterwards. a windows explorer window should open up - in there delete the file named localstore.rdf - it will be regenerated again the next time you launch the browser.

Sorry, it didn't work. I also (previously) deleted prefs.js and that didn't work either.

could you provide your list of extensions?please go to the firefox menu ≡ > help ? > troubleshooting information, copy the contents of that page and paste them here into a reply on the forum...

Here it is:

Extensions Name Version Enabled ID 1-Click Dailymotion Video Downloader 1.0.6 true DailymotionVideoDownloader@PeterOlayev.com 1-Click YouTube Video Downloader 2.3.5 true YoutubeDownloader@PeterOlayev.com Color Management 0.5.3 true color_management@seanhayes.name DownloadHelper 4.9.24 true {b9db16a4-6edc-47ec-a1f4-b86292ed211d} EPUBReader 1.4.2.1 true {5384767E-00D9-40E9-B72F-9CC39D655D6F} Exif Viewer 2.00 true exif_viewer@mozilla.doslash.org FxIF 0.4.5 true {11483926-db67-4190-91b1-ef20fcec5f33} Ghostery 2.9.1 true firefox@ghostery.com Greasemonkey 1.8 true {e4a8a97b-f2ed-450b-b12d-ee082ba24781} Image Download Ⅱ 6.0.5 true imagedownload@Merci.chao ImageExchange 2.9.1 true image-exchange@picscout.com Microsoft .NET Framework Assistant 1.3.1 true {20a82645-c095-46ed-80e3-08825760534b} Snap Links Plus 2.4.0 true snaplinks@snaplinks.mozdev.org Stylish 1.3.1 true {46551EC9-40F0-4e47-8E18-8E5CF550CFB8} Thumbnail Zoom Plus 2.3.2 true thumbnailZoom@dadler.github.com TinEye Reverse Image Search 1.1 true tineye@ideeinc.com User Agent Switcher 0.7.3 true {e968fc70-8f95-4ab9-9e79-304de2a71ee1} Who stole my pictures? 0.0.8 true images@wink.su Adobe Acrobat - Create PDF 1.2 false web2pdfextension@web2pdf.adobedotcom Adobe Contribute Toolbar 6.0 false {01A8CA0A-4C96-465b-A49B-65C46FAD54F9} Find In Tabs 0.4.0.6 false FindInTabs@mishac.com Thumbnail Expander 1.0 false thumbnailexpander@extensions.danwendorf.com YouTube Video and Audio Downloader 0.3.3 false feca4b87-3be4-43da-a1b1-137c24220968@jetpack

this dropper doesn't appear for me by default - is this caused by one of your stylish scripts and can you use it to make the urlbar smaller or disable the script once?

You can try to reset the browser.uiCustomization.state on the about:config page.

You can check for problems with preferences.

Delete possible user.js and numbered prefs-##.js files and rename (or delete) the prefs.js file to reset all prefs to the default value including prefs set via user.js and prefs that are no longer supported in the current Firefox release.

• http://kb.mozillazine.org/Preferences_not_saved
• http://kb.mozillazine.org/Resetting_preferences

There is software like Advanced SystemCare with its Surfing Protection feature that can protect files in the Firefox profile folder against changes. If you have such software then check the settings or uninstall this software.