Just out of curiosity, do cats hate certain people who frequently annoy/irritate it? Chestnut here doesn't like people who carry her alot, annoy her, so she bites and chases. So, do cats actually hold grudges??
Ah, I moved on June 20 and we had the same problem. Let me tell you it's temporary, she needs to adjust to her new surroundings, and just like Chestnut, she'll get back to her normal self after 5-7 days.