I am using Firefox on my mac. It appears to have a type of virus, in that the pages, have various highlighted words or phrases. I have tried to find an ad-aware removal program, but failed. I was going to uninstall firefox & use safari (or use safari to download it again) But safari WILL NOT BOOT at all. I have heard the arguments that macs dont have adaware, but this is doing a good impression of adaware if it isn't. I could do a screen shot, but dont know how to put that ONTO here. any help much appreciated.