Well there was - you don't need to remove the whole yahoo toolbar just because you don't want to use the anti spy function.
spa - i use norton and the yahoo anti spy and search and destroy. I use yahoo as well as the s&d because you cn never have too many anti spy functions and it's came with the toolbar so why not!
the yahoo one usually picks up very low level threats, tracking ccokies and ads and shouldn't affect anything else, but do read thru what it has picked up just in case.
As to norton i know others don't like it but I think it's relative.i replaced my Pc and norton came with it, i haven't had any problems.
With AVG however - although i once would have recommended it - it picked something up, wouldn't get rid of it and put my PC into meltdown!