Sorry for offtopic question  (this is most active topic, thats why I am asking from here).
ZEC transactions from coinmine.pl to kraken.com stalled more than 8 hours. I can see one transaction in kraken.com is still in confirming state ( more than 8 hours ) and second one is not even showing up in kraken.com. Despite it went out from coinmine about 2 hours ago.
Could it be connected to ZEC upgrade? https://forum.z.cash/t/zcash-1-0-3-important-upgrade-for-miners-pools-users/8650