#2 stake stake stake
I have also little dilemma. I will receive big stake in Thursday 26th, before 27th, but what will happen if block 200.000 came before that and I don't update wallet. I will only lose my stake or what... And what if I don't update wallet after 27th? I suppose old wallet won't work.
At the slow rate of the network right now, it's highly unlikely block 200,000 will occur before the protocol switch on Friday. This was intentional. Back to old protocol first, then kick in new POS% rewards algorithm at block 200k.
You should definitely update your wallet NOW, your staking will still happen just like it did on the old version until the fork kicks in. Version 1.0.4 will no longer sync with the network on Friday, Feb 27.