Probably, your PC is infected. Check this article. https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware

Also, the forum software detected your Firefox as version 13. Is that correct?

Version 13 is not secure; Mozilla discloses security flaws after each new release. Is something holding you back from upgrading to Firefox 40? Please let us know so we can suggest solutions or workarounds.

If Help > About Firefox shows Firefox 40.0.3, you may need to clear the preference that is misreporting your version number. See: How to reset the default user agent on Firefox.

jscher2000 said

Also, the forum software detected your Firefox as version 13. Is that correct? Version 13 is not secure; Mozilla discloses security flaws after each new release. Is something holding you back from upgrading to Firefox 40? Please let us know so we can suggest solutions or workarounds. If Help > About Firefox shows Firefox 40.0.3, you may need to clear the preference that is misreporting your version number. See: How to reset the default user agent on Firefox.

I'm not really tech savy so your suggestions are really much appreciated but how do I upgrade to the Firefox 40? When I go to Help>About Firefox and check for updates, it says that mine is up to date. >_<

yourrlady0825 said

jscher2000 said

Also, the forum software detected your Firefox as version 13. Is that correct? Version 13 is not secure; Mozilla discloses security flaws after each new release. Is something holding you back from upgrading to Firefox 40? Please let us know so we can suggest solutions or workarounds. If Help > About Firefox shows Firefox 40.0.3, you may need to clear the preference that is misreporting your version number. See: How to reset the default user agent on Firefox.

I'm not really tech savy so your suggestions are really much appreciated but how do I upgrade to the Firefox 40? When I go to Help>About Firefox and check for updates, it says that mine is up to date. >_<

I managed to get the Firefox 40 but I'm still having the same issue.. grrrrr

You may have ad / mal-ware. Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.

Adblock Plus {web link} Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Adblock Plus Pop-up Addon {web link} Adblock Plus Pop-up Addon extends the blocking functionality of Adblock Plus to those annoying pop-up windows that open on mouse clicks and other user actions.

Forum; Adblock Plus Homepage {web link}