The bookmarks sidebar keeps popping in and out and I can't get it to stop. I have gone to "View" and tried to hide it but no luck. Any suggestions?

The bookmarks sidebar keeps popping in and out. This shifts the screen making it hard to read or write anything. I have gone to "View" but am unable to stop it. The firefox questions don't address this issue.

Did you check if there were extensions installed in that new profile?<br />
Some programs install extensions globally and appear automatically in a new profile.
Do a clean (re-)install:
* Download a fresh Firefox copy and save the file to the desktop.
* http://www.mozilla.com/firefox/all.html
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data if you uninstall the current version.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
Do a malware check with some malware scanning programs.<br />
You need to scan with all programs because each program detects different malware.<br />
Make sure that you update each program to get the latest version of their databases before doing a scan.<br />
* http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
* http://www.superantispyware.com/ - SuperAntispyware
* http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
* http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
* http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free
See also:
* "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

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