I have Ubuntu 13.04 and Firefox 24. Lately I'm having this issue on Firefox, some ads pages like "thelotter" are opening in new tab while visiting some sites. I have many addons that blocks ads, pop-ups and other stuff, like "Noscript", ghostery, adblock etc... but still the open, so I thought that it could be due to some malware I got on the web.
The question is: is it possible that I have some malware or anything like that on my ubuntu? How can I check it? And how can I solve the problem?
I also tried to remove firefox and its folder in /home and reinstalled it but same thing.
What can I do? Thanks