I updated to the version 39 and I get all this weirdness
23:06:44.803291 INFO ;-) Found block for difficulty: 36610
23:06:44.805293 INFO Timestamp of block with id: <2a61922aac966c30965beaedb90c00
09c79c9fd69086190b1140a9072115a463>, 1518163604, less than median of last 30 blo
cks, 1518167007
23:06:44.808295 INFO Block <2a61922aac966c30965beaedb90c0009c79c9fd69086190b1140
a9072115a463> has invalid timestamp: 1518163604
23:06:44.812299 ERROR mined block failed verification
23:06:45.217688 INFO ;-) Found block for difficulty: 36610
23:06:45.219691 INFO Timestamp of block with id: <a262d8ca1c6e06d771b956509eed71
b01473708251ddd2782324ccec9639a431>, 1518163604, less than median of last 30 blo
cks, 1518167007
23:06:45.223693 INFO Block <a262d8ca1c6e06d771b956509eed71b01473708251ddd2782324
ccec9639a431> has invalid timestamp: 1518163604
23:06:45.226696 ERROR mined block failed verification
