I've heard some people say it's boring, so I want to know if most think the same. (Judging by the Fanpop's Favorite DP movies results I bet everyone will say yes though).

Dang, that action! Never seen anything like it.
Okay, being serious, I don't find it boring. It has some scenes that drag on more than they should, but overall, not a boring movie.

To be honest, it's mainly the scenes with the mice though since they just go on and on. The movie lacks a bit of excitement for me. Those mice scenes are so unnecessary.

I would say "No" or "A little bit". A few of the mice scenes, while none truly filler, drag on a bit, like the breakfast scene (Gus could have spilled the corn grains once instead of twice) and the scene wher they snatch away the stepsiters' discarded items (as much of a kick I get to watching Jaq outsmart Lucifer, the mean ol' thing wasn't needed in that scene, tough I suppose then he would be absent from the screen far too long). So, while I like these sequences and realize they're necessary (the first creates a conflict between Cinderella and the stepmother while the second gives the villain something to act in and prevent the protagonist from achieving her goals), they grow more tiresome with each watch.

But the scenes that really bore me are the interactions between the King and the Grand-Duke at the castle, first in the office then in the royal bedroom. They aren't filler in the slightest, but God, the King's abusive demeanor gets on my nerves.

And overall, it isn't the most action-packed, thrilling or unpredictable movie. Okay, I hope this comment actually makes sense instead of just being a bunch of jumbled thoughts.

The mice scenes definitely drag. Other than that, I don't have any complaints about Cinderella. :)

A tad.

The mice scenes

I still enjoy it, but it is a slow movie at many times. The mice scenes drag on a lot and they're cheap Tom and Jerry rip-offs, it doesn't help that due to the mice giving so much screen time I feel other characters are left underdeveloped (The Prince, the Stepsisters). For me the movie starts kicking in once she goes to the ball.

not at all

IMO, movies are all have boring scenes but as a whole, Cinderella is far from boring movies.

My least favorite DP movie. There is nothing enjoyable to me.