There are several results behind your problems, they might be,

• May be your computer infected by virus.
• You have no antivirus software.
• Your browser is not safe (use Firefox or Chrome)

First of all, you should clear cache and cookies. Here is Firefox help: How to clear the Firefox cache. I found this useful video from YT - http://www.youtube.com/watch?v=XN_j_QYqOpY.

Done both of the above and still seem to have this issue. Does anyone know what that server is?

Do you use Avira Antivirus? I think it is part of the web protection.

i think it might be malware related, please go to firefox > addons > extensions & remove any suspicious entries (toolbars, things that you have not installed intentionally, don't know what purpose they serve, etc). also go to the windows control panel / programs and remove all toolbars or potentially unwanted software from there and do a full scan of your system with the security software that you have in place and/or a different tool like the free version of malwarebytes.

Troubleshoot Firefox issues caused by malware

You were correct. I found "wxDfast" in my add-ons extensions and removed it and the problem is now gone.

Thanks that was the problem. I had gone through virus checks, deleting cookies and saved preferences......