Firefox

[Moltke]

No luck with the above command's

Hi [member=5288]arxontas[/member]
I just checked and didn't have any problems to login into my Yahoo account from Firefox, you could try the following; go to your home folder and enable "show hidden files" then find and rename ~/.mozilla  folder to something like ~/.mozilla.old and start over, sometimes profiles can get messed up, however, if you want to install opera you'll have to download the .deb file from its website http://www.opera.com/computer when installing, opera will ask if you want it to be updated with the rest of the OS. Chromium Web Browser is available in Lite Software tool. If you prefer Google Chrome go to https://www.google.com/chrome/browser/de...index.html download the .deb file, right click on it and select "install with gdebi", that's it, or you could follow install instructions from here https://www.ubuntuupdates.org/ppa/google_chrome 
Hope  this helps!