Firefox 16.0.1
I've just downloaded this version which seems to run well with Mountain Lion. The annoying thing is that annoying ads seem to creep in when you click on a highlighted word in a text. I've not seen this before , but it's very off putting as you have to guide your pointer away from these texts.
Chrome doesn't do this but then of course they don't have a drop down address bar!
What are my options?