I have seemed to develop memory problems. I know I'm not a spring chicken, and their are other prescriptions that can cause it too, like trazodone & xanax. My memories or ideas seem to be like a puff of steam. They are there for a few seconds, and I can almost see them fade away slowly, and can't seem to stop it. I've been taking Ambien CR for 1-2 yrs. Having difficulty in college, too.