On both Safari / Firefox my search results are redirected when using Yahoo; any advice on how to fix?

Question

I suppose a virus or the equivalent of are out of the question being that I'm using a Mac (MacBook Pro 10.4.11), however, clearly something is amiss. Any help would be greatly appreciated. Oh, might there be a connection to the recent Yahoo design changes...?

Answer 1

Is your browser being redirected to a specific site?  I did encounter adware for the first time ever on 10.4.11 (I've been online w/o virus protection since '98) a month ago.

When the browser is redirected, look at the address bar and see what's going on.  

Then do a spotlight search on your HD (for that ad redirect source) and you'll probably see a foreign file that's in the library's application support (Macromedia, Quicktime are strong candidates) file.  Trash it.  The recent OS update took care of this security breach but your system (as was mine) probably got infected before the update.

What was unusual with my adware is that it only activated when I was at a the UK's Guardian webpage.  Very specific for adware.

Hope you find it easily!