Too many nodes still using mainnet0016 , Please check the how to above and update asap, only a few hours left.
After deleting the folder and reinstall to the latest version is says "version=mainnet0016" in my config file. if i understand it right everyone need to manually edit that file to xxxxx0017?
If you want to be safe, yes.
We know it comes late, and it's fully our fault, but its that protocol version number that will allow to filter up to date nodes from others if the fork goes south.
If you only use the wallet, connected to an online server, then don"t bother: you have no local chain, nothing to fork.