And it just locked up, just like Firefox 24.0.
what site were you going to? what virus scanner? have you tried noscript? others have suggested ghostery, but both noscript and ghostery do require that you page by page accept what you want to see. It drives me nuts because I can’t see video/slideshows on some pages and never figure out what they are blocking. But, I love them because they keep so much garbage off of my computer.