Trouble Reading Books

Does anyone else have this problem?

I love going to the library and bookstores and browsing through whatever interests me. I'll begin to read a couple of pages and then all of a sudden, I get distracted and either quit reading the books I've borrowed/bought or I'll finish them months or even years afterwards.

Also, although I'm able to read textbooks for school, I have incredible difficulty sometimes. I find myself reading the same sentence or paragraph over and over and over. My mind drifts and I have trouble focusing. I don't have ADD (I was concerned that I might, but no).

It's not a problem as such, but does anyone else get the effect when your mind wanders while you're reading, then after about thirty seconds you realise you've just read through the entire paragraph without taking any of it in.