Yes, I have, unfortunately. I've had to run back and forth between chapters and between books to try to see if I had really read what I thought I had read. This led to me saying "I must have missed something" and going back and re-reading the whole thing again, then again... in total I'd probably read the prequels over 4-5 times each, and felt that I'd been smacked in the brain each time.

I've stopped doing that recently, since I just keep getting really angry every time... I've been told I have to stay calm RE blood pressure... Also used them as kindling when we were hit by the two snowstorms this past winter - we were out of power and snowed in for almost a week, and we had a ton of wood, and a fireplace, but no newspapers or the like, so I pulled out my trusty copies of McDune and started many a fire with them. I still had pages, and the covers, left at the end of the week, so I burned the rest of em, just cause I had started anyways. The second snowstorm I'd already chopped some kindling and had it stored away, so I still have my hardcopy of Hunters (minus only the first 20-25 pages).
On a happier note, I've read and re-read the original series so many times that I can't even keep track. There was a 2-year period where I had the whole series in one of the bathrooms (I had a bookshelf in there with some classic novels and comics) of a 5-bedroom house, with a bunch of other musicians and students (ahhhh those were the days!)... Those copies were literally falling to pieces by the time I left. I read each book well over 5 times each over that two-year period, since I was known as the 'extended dumpster' (stayed in the bathroom for waaaaay too long, cause I kept saying to myself '....just one more page! just one more...! Needless to say, I was the butt of many a joke

).
TMI?