I don't personally like Pitino. I hate how he "bends" the defensive rules [he was one of the first--now there are dozens of teams that emulate that defensive style and dare the officials to call fouls]. I also dislike him from the time he was the head coach of the Celtics. And I'll never "forgive" him for beating us for the national championship in 1996. So for me, that's what its about.
Definitely not "hate" -- more like disdain, but for sports reasons. Obviously, he's good friends with Boeheim, always been very complimentary about SU and his time here, his friendship with Jim, etc.