My mom is very obsessed with cleaning? normal, or abnormal?

My mom cleans A LOT. She starts in the morning before she goes to work. Then as soon as she gets home from work she cleans until we have dinner. Then she cleans more after that. And repeats the same thing every day. Weekends are really bad. She will wake up early (around 6am) and clean all day until about 5. Then she'll take a short break and clean until 10:00 at night. If we have something to do or somewhere to go, she actually gets frustrated and in a really bad mood because she didn't get to finish her cleaning. Even though there is nothing else to clean, she will find something and clean it anyway. Then she'll move outside and clean around the house or work on weeding the garden etc. My brother and my dad and I do our basic chores such as dishes, vacuuming, laundry, etc. But my mom goes way overboard. We never even see her and when we do she is upset that we interrupted her cleaning. And she'll come into my room and nag on me for not cleaning something that doesn't even need to be cleaned. The other day she yelled at me for a half hour about having dust on my TV, and my TV had practically no dust on it at all. It is really annoying that the only thing she really does is clean. Is this normal or not?