Oh yes, my memory went to hell when I was drinking heavily, even when I wasn't actively drunk. Part of the brain pickling process, I reckon. I got to the point where I had to write down the password to my computer, I'd forget conversations, I left my ATM card in the machine and walked away like four times, and whole chunks of time became foggy. One of my early milestones, by about 6-8 weeks in, was finally feeling "present" again.