Well, you guys spoke about quite a number of topics pertaining to one of my favorite subjects... conspiracy theory, but before I get into that, I'll address the Y2K issue.
For those who don't know, the problem wasn't just that the date switched back to 1900. Back when the old systems were set up, they used a two digit field for the year instead of a four digit field. To most people, this doesn't mean much, but to anyone who knows much about programming languages, this is huge. Every bank account that used the old AS400 mainframes used the programs that everyone heard so much about in the scare. This was a problem because these date fields determined how your bank interest and deposits were handled. If the date had re-set to 1900 instead of going to 2000, nobody's bank account would have existed. What made this such an issue is that there were thousands of regional bank chains that were not even close to being ready, and it would have caused a financial crash as everyone's account data was lost. Can anyone honestly say on here that they had a bank account in the year 1900?
As for the Mayan/2012 connection, I doubt anything is going to happen. I've read damn near every conspiracy site that comes up and they all talk about rumored shit that I have yet to hear a legitimate argument that the mayans left a prophecy. Hell, about 90% of our knowledge of mayan civilization comes from ONE archaeological find, the Dresden Codex. There really are NO other SIGNIFICANT finds of that nature. Everything is always mummies, artifacts, and beads. No real writings. The truth is that, while the Mayans ended their calendar, there's no real prophecy or writing that gives us a definitive "Why?". Everything else is more speculation than truth, where prophecies from other civilizations and noted prophets from history have made similar claims have been linked by nothing more than THAT similarity alone.
The bottom line is that we can draw dots in the stars and come up with just about anything our imagination desires, but it doesn't make our imagination a reality. The same thing goes for prophecy and coincidence and conspiracy theory... you can make all the connections you want, they can even seem perfectly logical, but it doesn't make them real.
I have a lot of ideas about things of this nature that I keep to myself, but you guys seem genuinely interested in the 2012, so I thought I'd share a little of what I've been able to learn beyond all the hype. Hope it helps.
Edit - correction: The Dresden Codex tells us 90% of what we know about their Calendar, not about their civilization. However, not much IS known about their civilization at all beyond what we've gleaned from the handful of pages that have been discovered, and the Dresden Codex is considered to be the most complete of the four known Maya Codices. Yes, only FOUR have been found. That is how little we KNOW.