I noticed about a month ago at school that no matter how long I kept the lid open on my MBP it would never go to sleep after 35 minutes like it is supposed to. I figured that it was because someone was always accessing my iTunes library. Now that i've been home for a few days I notice that it never goes to sleep automatically as well. No one is connected to iTunes and no internet programs are running to keep it from going to sleep. I don't see anything wierd in Activity Monitor that would suggest why it's not sleeping on it's own. I called Apple today and after an SMC reset didn't fix the problem of course they are convinced it's my third-party OWC RAM that's causing the problem (which has worked fine for the last 10 months and well before this sleep issue started). Just to be safe, I popped in the RAM from my friends MBP and it does the same thing. In fact, we found out that his MBP has the exact same issue as mine does, it simply will not sleep on it's own when it's supposed to. Is anyone else having this issue?