Is it normal to be really really annoyed by teachers who talk slow

I mean, you have to remember one thing: the tea her has to cater to the entire class, not just one student ;)

Yes and no. My theory behind it is so that the students who aren't as "quick," per-say, it makes a little easier for them to understand and catch what's going on. But on the other hand, people like yourself, and many others, it's a nuisance. Almost a similar feeling as if the teacher was talking to you as a child, or that the teacher may be a little slow.

I imagine that some speak slowly because it is easier for the students to process and store information. It is annoying but also useful. Try to not let it get to you.

Not only those who speak slowly but also those who keep repeating the same thing... normal...

Bueller...... Bueller....... Bueller........