Well, yes, if the private key was not generated at random, it is possible to crack it.
[...]
Many thanks for your comprehensive answer!
It seems, as I've found in the last couple of hours, the use faulty PSRNG's might pose a threat, maybe significant enough to drive the price further down.
The unfolding story is here:
https://bitcointalk.org/index.php?topic=107172.msg8939173#msg8939173 I hope you'll find it interesting enough to consider including it in your great work (I'm closely following your posts) that you're doing on studying/documenting the whole ecosystem.
Anyway, because I was invited so kindly by a smart a** to basically gtfo, I will stop here. I better go&check how do I create a more secure wallet and move my coins there. I look forward to meet you again soon and also let's hope my hunch is unjustified.
Oh, I'm a miner for more than a year now. So, I'm noob but, sadly enough, I see many old members here who seems to know a lot less than me.
Best regards.