@Ragman,
I did read the links you posted. And I don't doubt that Adam Lanza may have suffered from Asperger's, and might have been on medication in the past, but that does not mean he was necessarily treated with medication at the time of the shooting.
In addition, certain medications were banned in the U.K. for use with children--those under 18--and Lanza was 20. So medicating him with SSNI/ SSRI drugs, if that was even done, would not have been inappropriate given his age. The cautions about these drugs have been well-known for years and behavioral or mood changes would have been apparent to his mother who could then have reported them to his physician. So far there is no evidence that any physician was currently treating Lanza with medication.
Also, I'm not overly impressed with the info supplied by those 2 people in the 60 minutes interview because it seems somewhat dated, mainly referring to what Adam was like in school--which was at least 2 or 3 years ago. Maybe he was on some kind of medication back then, but that doesn't mean he was on medication more recently. Hopefully, when the complete autopsy results come back, maybe we will have some answers regarding medication. I'm sure his family wants those answers too.
No one I've seen on TV, or even read about, seems to have had any direct contact with Lanza in quite some time. He apparently was seen at a shooting range, target practicing, in the past 6 months, but he doesn't seem to have interacted with anyone outside of his home, and I don't even think his brother had seen him very recently. We don't know what sort of information his brother or father might have supplied to law enforcement, but they certainly might be more reliable sources of more recent information than anything I've heard thus far.
I think Lanza's motivation, and what might have provoked his actions, still remains a complete mystery. We have no idea what his behavior had been like in the days or weeks prior to his rampage, or even what his life was like or how he spent his time. Did he just sit in the house playing violent video games by himself? Did his mother know what he was planning? Is that why he shot her? He apparently smashed the hard drive of his computer in an attempt to conceal it's contents, but law enforcement is confident they can restore it. Perhaps that will yield some clues.