Normally I'm pretty cool, able to laugh away these kind of movements.

I have to say these recent weeks and especially the last 24 hours have made me a little less comfortable... or even slightly worried. Gains come very slowly only to be wiped away at rate 2.0 in a couple of hours. I'm just a newbie with about a year of experience, but this seems more intense. What makes me even more concerned is that, even though I try to read a lot of stuff from 'experts' in this field, I've seen absolutely 0 in advance about the possible dumping of MtGox coins. Could have seen that one comming, right?