Whats causing this crash? Mt. gox isnt getting another ddos attack and people aren't really panicking. So are people just taking profits or are they really buying LTC?
For the exact same reason every other market crashes? Bubbles are part of human psychology. Also the exact same reason we went from $5 to $266 then back to $50. I'm still bullish long-term, but this correction was natural at this point.
BTW there was never a "DDoS attack", just a buttload of traffic caused by market fervor. They even said as much here:
https://mtgox.com/press_release_20130411.html