It's possible that you are having a problem with some Firefox add-on that is hindering your Firefox's normal behavior. Have you tried disabling all add-ons (just to check), to see if Firefox goes back to normal?

Whenever you have a problem with Firefox, whatever it is, you should make sure it's not caused by one (or more than one) of your installed add-ons, be it an extension, a theme or a plugin. To do that easily and cleanly, run Firefox in safe mode (don't forget to select Disable all add-ons when you start safe mode). If the problem disappears, you know it's from an add-on. Disable them all in normal mode, and enable them one at a time until you find the source of the problem. See this article for information about troubleshooting extensions and themes and this one for plugins.

If you need support for one of your add-ons, you'll have to contact its author.

If the problem does not disappear when all add-ons are disabled, please tell me, so we can work from there. Please have no fear of following my instructions to the line, as all can be easily undone.

Hello, The problem did not disappear, i opened modzilla in safe mode and it still the same error. i then disabled all the addons and extensions and still no luck. any more suggestions? thank you

If you can open other websites, then I don't think it's the problems with your add-ons. I assume you went to: http://www.avast.com/index to download the program, right? Do you mean the website won't open at all or just the download window won't open?

Sounds like some of the malware out there right now. Download a good malware remover like MalwareBytes. Some Malware prevents u from accessing any site which can help you. so you may need a second computer. Also, if you are on a router, try those sites while wired into the modem directly. If it is okay, then router is infected.

Here is advice from the Malwarebytes forum and an alternative link to download Malwarebytes. Notice especially the renaming of the mbam-setup.exe file before installation and the mbam.exe file after installation.

http://forums.malwarebytes.org/index.php?showtopic=38629&view=findpost&p=193288

Other anti-malware applications you should download and run after Malwarebytes. You should download, install, update and run as many of these as possible. Different anti-malware programs do not all detect the same malware.

• Dr. Web Cureit - http://www.freedrweb.com/cureit/
• SuperAntispyware - http://www.superantispyware.com/
• AdAware - http://www.lavasoftusa.com/software/adaware/
• Spybot Search & Destroy - http://www.safer-networking.org/en/index.html
• Windows Defender - http://www.microsoft.com/windows/products/winfamily/defender/default.mspx

If you still have problems, use one of the following specialized sites for malware removal. Be sure you read their rules for posting and follow their advice to the letter:

• http://bleepingcomputer.com
• http://www.spywareinfoforum.com/
• http://www.spywarewarrior.com/index.php
• http://forum.aumha.org/

After you get the malware cleaned from your system, you need to update some plug-ins on your system that contain known security issues:

• Java See: https://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox
• Flash See: https://support.mozilla.com/en-US/kb/Managing+the+Flash+plugin

Also note that a security update for Adobe Reader was released today. New version of Adobe Reader is 9.3.4.

Update Adobe Reader (Adobe PDF Plug-In)

• Check your version: http://www.mozilla.com/en-US/plugincheck/
  • Note: plugin check does ont have information to check all versions of all plugins
• Another new version of Adobe Reader is schedule for release during the week beginning 2010-08-16 to correct security issues.

Updating Adobe Reader:

1. From within your existing Adobe Reader (Available only through this method as of 2010-08-19, 1:43 p.m. CDT (USA)):
   • Open the Adobe Reader program from your Programs list
   • Click Help > Check for Updates
2. Download complete installer (NOT available through this method as of 2010-08-19, 1:43 p.m. CDT (USA)):
   • Use Firefox to download and SAVE the installer to your hard drive from the link in the article below
   • On the Adobe page, un-check any extra items (i.e. Free McAfee® Security Scan Plus) then click Download button
   • If you see message just under tabs, DO NOT click the Allow button, instead click below that where it says "click here to download".
   • Click "Save to File"; save to your desktop
   • After download completes, close Firefox
   • Click the installer you just downloaded and allow the install to continue
     • Note: Vista and Win7 users may need to right-click the installer and choose "Run as Administrator"
   • See: https://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox#Installing_and_updating_Adobe_Reader
3. After the installation, start Firefox and check your version again.

thank you so much for your replies. I am going to sort out this malware issue and hopefully will fix this problem I connected straight to the cable and it still does not open any anti virus website pages. I will log back on to let you know how this works. thanks so much kelly