I finally found the problem :

Some block where mined and counted in db but haven't the txid yet

This problem is now fixed, but I will monitor tonight to see if everything is ok.

I am really sorry about the recent problem.
In addition, I cannot do anything during the day because I am working. So the only moment when I can fix problem is in the evening

very nice overnight stability last night

WDC pool is running well now

PXC pool need some miners

a HBN pool has been opened : http://hbn.theblocksfactory.com/

Hey there. If you don't mind, we've updated the client for WDC and are requesting all pools do the same. The coin adjustments will take place on Aug 30th, so no worries if you can't get to it right away. Thanks!

PXC : extra block reward 5 PXC !

WDC:
worldcoind updated.
stratum updated.
frontend updated.

The WDC pool seems to be skipping blocks for payment. There are  quite a few blocks in between which shows no payment, even though some of them took a few minutes to crack. I even found block 503,066 and it shows no payout for me, even though I got the reward finder payout lol.

The problem should be fixed

Orphan are now displayed in stats