I got infected with XP Internet Secutiry 2012 and now every time I load FF it changes the access methodd to a manual proxy connection of 127.0.0.1

Question

How do I stop the proxy information from being changed?

Answer 1

Parts of that infection may be left behind.
Have your tried going to Options > Options > Advanced > Network > Connection > Settings, tick "No proxy"? Then close Firefox, restart Firefox from your desktop icon, check the setting just made to be sure it "sticks".
You can get some help/information about that malware here: http://www.bleepingcomputer.com/virus-removal/remove-win-7-antispyware-2012
The procedure on bleepingcomputer.com (above) is involved. If you feel uncomfortable doing it yourself, you can scroll to the bottom of that page and received '''''expert help''''' on their forum. Just follow their instructions and do exactly what they tell you to do, no more/no less. Be patient, they reply in the order that posts in the forum are received.
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Your question under More information: '''''"Is it illegal to kill people who impregnate you PC with extortionware?"'''''
Sometimes I wish it wasn't illegal, but I am sure that it is.
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After you get the problem above resolved. you need to do the following.
'''You need to update the following.''' The Plugin version(s) shown below was/were submitted with your question and is/are out of date. You should update to avoid known security issues with the version(s) you have installed. Click on "More system info..." to the right of your question to see what was included with your question.
*Adobe Shockwave for Director Netscape plug-in, version 11.5
*Next Generation Java Plug-in 1.6.0_21 for Mozilla browsers
#'''''Check your plugin versions''''' on either of the following links':
#*http://www.mozilla.com/en-US/plugincheck/
#*https://www-trunk.stage.mozilla.com/en-US/plugincheck/
#*'''Note: plugin check page does not have information on all plugin versions'''
#*There are plugin specific testing links available from this page:
#**http://kb.mozillazine.org/Testing_plugins
#'''Update Shockwave for Director'''
#*NOTE: this is not the same as Shockwave Flash; this installs the Shockwave Player.
#*Use Firefox to download and SAVE the installer to your hard drive from the link in the article below (Desktop is a good place so you can find it).
#*When the download is complete, exit Firefox (File > Exit)
#*locate and double-click in the installer you just downloaded, let the install complete.
#*Restart Firefox and check your plugins again.
#*'''<u>Download link and more information</u>''': http://support.mozilla.com/en-US/kb/Using+the+Shockwave+plugin+with+Firefox
#'''Update the [[Java]] plugin''' to the latest version.
#*Download site: http://www.oracle.com/technetwork/java/javase/downloads/index.html (Java Platform: Download JRE)
#**'''''Be sure to <u>un-check the Yahoo Toolbar</u> option during the install if you do not want it installed.
#*Also see "Manual Update" in this article to update from the Java Control Panel in Windows Control Panel: http://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox#Updates
#* Removing old versions (if needed): http://www.java.com/en/download/faq/remove_olderversions.xml
#* Remove multiple Java Console extensions (if needed): http://kb.mozillazine.org/Firefox_:_FAQs_:_Install_Java#Multiple_Java_Console_extensions
#*Java Test: http://www.java.com/en/download/help/testvm.xml