Why have some of my toolbar settings suddenly appeared in a foreign language?

Question

I tried to post a screen shot, but I can't paste here apparently. The toolbar line that has some of my icons, like Facebook, Skype, and YouTube, also contain items that appear to be written in Arabic or Greek or another foreign language.
Fore example, first one is: rockholmi.ru followed by a search bar, then a green arrow followed by the words: Hantn (both ns are small capital Ns and the first one has this symbol ~ over it. Next comes a globe with the words: Mehho. The first h is capitalized and the second capital H is attached to the o. When I pull down the menu items next to these words, they are also in these mysterious languages. However, the rest of my toolbar is in English! Help, please!

Answer 1

Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]
Do a malware check with a few malware scan programs.<br />
You need to use all programs because each detects different malware.<br />
Make sure that you update each program to get the latest version of the database before doing a scan.<br />
* http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
* http://www.superantispyware.com/ - SuperAntispyware
* http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
* http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free
* http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
See also "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked and [[Searches are redirected to another site]]