It doesn't even need to be a real problem - just one that the investor perceive as a problem. And given that the tech is pretty complex and beyond the understanding of a lot of people using bitcoin then that risk is even greater.
And as with any investment scheme the potential for manipulation by rumour is also very real. There is a lot of regulation around more mainstream investment and money mechanisms to stop this (and it still happens) - bitcoin, which has no centralised "defender", will be just as prone to it.
I would imagine that now a wider audience is becoming aware of bitcoin we will start seeing this kind of thing in the next few months (and possibly are already doing)
And as with any investment scheme the potential for manipulation by rumour is also very real. There is a lot of regulation around more mainstream investment and money mechanisms to stop this (and it still happens) - bitcoin, which has no centralised "defender", will be just as prone to it.
I would imagine that now a wider audience is becoming aware of bitcoin we will start seeing this kind of thing in the next few months (and possibly are already doing)