My wallet is synched to block 1705 (the one shown by pools not updated yet, I mean all of those still showing block reward 10.000), while the official pools are at height 1682.
Does that mean we had a fork?
The longest chain is actually the "unofficial", how that impacts the network?

BTW, more than 50% of mining power is currently deployed on official pools (assuming that calculation is correct, not sure here), but is that enough?