Either I have misunderstood the accumulator issue or you have misunderstood the accumulator issue.

Zerocash requires an initial accumulator that will exist for the life of the currency. This accumulator requires certain knowns to be created. These knowns then have to be thrown away. However it's impossible to prove they were throw away.

Hense the concern. Someone who retains these variables in the beginning will be able to print new zerocash without any ability to prove the supply is being manipulated.

This is why in its current form zerocash is an example of a trusted crypto currency, and trust at this particular level (control of the money supply by whomever started the currency) is certainly a no go.

Kind of. It loads the entire blockchain into ram. It uses a lot of memory, and can probably be handled better, but isn't a memory leak .. as it won't grow unless the blockchain does.

yes that's great to hear, as long as block chain are doubled, the needed memory need to double too, that' expensive memory usage.

Is the network under attack ?

Can the massive amount of dust transactions be the problem ?

Everyone complain that pools doesn't pay but on http://monero.crypto-pool.fr/ for example, we did pay what has to be paid and even more as a gift.

Notice that not everyone is having problem receiving payment. So why some people keep saying they haven't been paid for a week ?

Concerning monero.crypto-pool.fr, we setup a new payment system that pay every 3 hours instead of every block to stop the dust transaction spamming. I hope the big pools plan on doing the same.

Maybe i didn't explain it well enough, here i will give you the source.

https://twitter.com/secparam/status/476479941878755329

look pool blocks ,10 hours no payout

I made a small test on http://monero.crypto-pool.fr/ with the CPU and got a payout, then I moved with 1.5k+ overnight and saw no payout.

I tried to send some to Poloniex, and my test 0.2 XMR is gone. And then nothing happened: http://monerochain.info know nothing about my transaction and about my payment ID. Simplewallet says "expected at least one payment_id" when i type "payments". When I sent, I typed just like "transfer 0 PoloniexDepositAddress 0.20 MyGeneratedPoloniexPaymentID" What I did wrong? I used windows cmd and right click to paste.

1)I just copied my wallet.bin and .keys in directory with new bitmonerod and new simplewallet.
2)Yes.
I refreshed my wallet from backup just now, and it's is ok, my XMR is back, so I will try to send it again. Maybe I made some sort of typo when sent it.

Have you updated to the latest software? usually if you can't find your tx in the blockchain, it's because you're not paying the correct tx fee (in the older software it was lower). What will happen is that it will get broadcast into the network waiting to be processed. The newest update prevents miners from processing transactions that do not have the new fee (.005 XMR). No worries though, you can update all your files. The best way to do this is by getting rid of (or just moving them temporarily) your blockchain, poolstate, p2pstate, and your wallet info file (NOT your .keys file). After that, redownload the blockchain and place it in the correct directory. Then open up bitmonerod and let it sync. Then move only your .keys file into the new folder and open up your wallet like normal (just type the name and password as usual). It will resync the wallet. If it's still not there you might have to wait up to 24 hours for the network to reject your previous transaction.