v1.2.8 error: Does that mean a 28s block was rejected ?

2017-02-22 00:16:00 SEVERE: Block not accepted
nxt.BlockchainProcessor$BlockOutOfOrderException: Invalid timestamp: 79996588 current time is 79996560, previous block timestamp is 79996072
        at nxt.BlockchainProcessorImpl.pushBlock(BlockchainProcessorImpl.java:849)
        at nxt.BlockchainProcessorImpl.access$400(BlockchainProcessorImpl.java:45)
        at nxt.BlockchainProcessorImpl$3.run(BlockchainProcessorImpl.java:194)
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)