One Sign

Okay the title is weird, but has there every been someone who has totally changed your outlook on the whole entire sign? Like, for example, I have a cap. friend who back stabbed me a few times, and I felt totally used by (of course it was in the past, but I still have some troubles getting along with her), but ever since whenever I hear about caps or something of such I always get sort of a bad opinion of them in my mind even though I have other cap friends that I totally adore. Like if I'm reading about caps I always compare what I read to her, and when I read something positive about caps. I get a thought in my mind that's like "No way, that's nothing like a cap." of course then I realize I'm being stupid, and tell myself to shut up. Same with Virgos, one of my Virgo friends totally changed my outlook on all Virgos, and Geminis as well (in a good manner though.) I usually ignore it since everyone is different regardless of signs, birthdays, etc. but just curious... so yes, anyone else?

Ah, yes.
Well, this is all a matter of my opinions and it's not a fact, so please don't flame me or anything for saying this..

But I happen to have some things against Libras mainly because my older brother and my mother both happen to be Libras, as I am a Pisces.
Obcourse I know I can be emotional because of my Piscean behaviour, but sometimes my Libran mother and brother can become so opinionated that it just becomes simply annoying.
My older brother always leaves terrible comments on food, telivision, anything that is given to him basically.
My mother on the otherhand always seems to always take my brother's side, and not mine, since she thinks his explanation for an incident is better.
..As well as speak about others behind her backs and also talk about my friends or basically about me to my other family members in a bad way.
I also find it annoying that he leaves feedback about anything I buy, anything I do, or anything he sees me doing in the household.
Personally, my older brother acts like a high & mighty lord with his own opinions, and I find it quite rude and inpolite with the way he acts toward others.

But anyway, I try my best not to become biased over an astrological sign.. but I never seem to look at the Libran pages because I find it a waste of my time since I just don't get along with most Libras anyway.
But I know that people are different, since obviously everyone has different signs in them so that doesn't mean I dislike ALL Libras.
I just don't get along well with the majority of them. :x

- Yoru