Just catching up on this thread so forgive me for replying to a post from some pages back.
I just put in random numbers close to those block ranges. Once in the range between 192298 and 192358, and once in the lower range. I'm pretty confident given the 60 second target time between blocks that this can be repeated throughout the blockchain.
That doesn't mean there isn't some sort of attack underway ... I have no clue. I'm just pointing out that the anomalies that BCX pointed out aren't anything extraordinary.
I do believe this is called back peddling.
~BCX~
You would know all about that wouldn't you, being an expert in back-peddling and all. Like the time you claimed to be able to steal Monero private keys, then it just became a timewarp attack. Or like the time you used your Poloniex trollbox name (that you had confirmed by a post on here to be yours) to threaten Poloniex with an attack in a matter of minutes, shortly before it coincidentally went down due to DDOS, then come on here to deny any involvement.
You're more full of shit than an overflowing septic tank, so excuse my scepticism when you say you're currently executing a timewarp attack against Monero. How has the recent checkpointing system been treating you?