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when clicking on an address firefox gets redirected or "jump"ed to another.

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After searching a topic, and then clicking on a selected web site my browser gets redirected or is jumped to another unrelated web site. Sometimes I am not able to use the back button and have to click on the home icon and start over. Is there a setting I need to turn off/on either in the tools toolbar or in Internet Explorer properties which is the window's browser that I don't use? Thank you!

After searching a topic, and then clicking on a selected web site my browser gets redirected or is jumped to another unrelated web site. Sometimes I am not able to use the back button and have to click on the home icon and start over. Is there a setting I need to turn off/on either in the tools toolbar or in Internet Explorer properties which is the window's browser that I don't use? Thank you!

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You have or had an extension installed (MegaUpload toolbar) that has changed the user agent from Firefox/3.6.14 to Firefox/2.0.0.16.

  • Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.14) Gecko/20110218 Firefox/2.0.0.16;MEGAUPLOAD 1.0

You can check the general.useragent prefs on the about:config page.
You can open the about:config page via the location bar, just like you open a website.
Filter: general.useragent
If general.useragent prefs are bold (user set) then you can right-click that pref and choose Reset.

See:


Do a malware check with some malware scanning programs.
You need to scan with all programs because each program detects different malware.
Make sure that you update each program to get the latest version of their databases before doing a scan.

See also: