hi Jalyn, a reset won't affect your bookmarks (and in any case, there will be a backup created on your desktop labeld "old firefox data"). for details please see Refresh Firefox - reset add-ons and settings

You can try these steps in case of issues with web pages:

You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

• Hold down the Shift key and left-click the Reload button
• Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
• Press "Command + Shift + R" (Mac)

Clear the cache and remove cookies only from websites that cause problems.

"Clear the Cache":

• Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

• Firefox/Tools > Options > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

• Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
• Do NOT click the Reset button on the Safe Mode start window

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

These add-ons can be a great help by backing up and restoring Firefox

FEBE (Firefox Environment Backup Extension) {web link} FEBE allows you to quickly and easily backup your Firefox extensions, history, passwords, and more. In fact, it goes beyond just backing up -- It will actually rebuild your saved files individually into installable .xpi files. It will also make backup of files that you choose.

OPIE {web link} Import/Export extension preferences

What about all my saved emails, will I lose any of these when I do a firefox reset ? And all my stored folders with many emails, and information I need to keep... Cyrus

Firefox doesn't do email and doesn't store email messages, it's strictly a web browser.

If you are using Firefox to access your mail, you are using "web-mail". Yoiu won't lose anything that's not in Firefox when doing a Firefox reset..

Firefox is a nightmare to use since it automatically updated 2 days ago.. I could not even access it. I had to do a system restore on my computer to 3 days ago, and now I can use it, but it is sooo slow. ANd the mouse is half the time not being responded to. I don't have this with IE, or off line using my computer, everything works normal.. just on firefox now

I used firefox for 2 yrs with no problems, until this recent update

 I will do a reset, and hope this fixes it, otherwise I will uninstall it, because its no use to me like it is.. ALso the blue circle icon spins for 3-5 mins when doing a search.. and I have to refresh the page a few times before it moves to open  a different email, etc.  Let me know your thoughts.. And I saw on the help forum , there are over 100 people in the last 2 weeks complaining of this same problem, since this last update.... My 2 friends have this now also since the new updates were installed... and one can't do a system restore, luckily I created one the day before my firefox update..  so frustrated with this.  I would have been better off to have kept my old firefox, and had checked no updates,, Cyrus