people need some time to update their wallets.
Actual wallet has no POW end time.
?
Pardon my ignorance. I concluded that if PoW block is set in the future, it will allow more blocks to be mines. I of-course, don't know as much as you as of yet. Why set a PoW end block to a future block?
Please have a look here:
http://coinjoint.info/mintcoin-removes-pow-fix-potential-security-issues/
Seems that Rat4 successfully demonstrated an attack against mint coin.
When new wallets are out, everybody have to update...