I tried sending 1.5B pennies to my cryptsy wallet and my pennies client crashed, next time I tried opening it it said error reading wallet.dat some transactions may be missing or something similar I can't remember exactly. I deleted all the blocks tried resyncing but my pennies have disappeared no transactions are showing in my register, where have my pennies gone?
The problems have you got the most, that is why the price does not rise, because we have no DEV able to fix the problemnas with wallets.
It's not a matter of development, is also about the user... If you have done a clean start re-downloading the blockchain, after it's done you should run in the command line a "repairwallet" command to ensure integrity of the coins. If they made it to the blockchain at one point or another, your coins will come back. They are never lost...