Network hash @ 90Mh/s!?
Total hashrate on poolinfo is ~35Mh/s.
That happens all the time. The nethashrate figure is not directly measured but estimated from the time taken to mine previous blocks. If a previous block was mined very quickly as fluke event, the estimated nethashrate figure can be very high and of course wildly inaccurate. The opposite can and does happen too - if a previous block took a very long time to mine, the estimated nethashrate figure can be very low and wildly inaccurate just the same.
The total hashrate given by the Poolstats utility is derived from the totals reported by the pools and is usually fairly accurate, although not entirely so. There can be some variance there as well but it tends to average-out over a relatively short time.
I'm afraid of Phi will kill "generic" cpu xmg-mining like gpu and asic killed btc/ltc mining
If people are completely stupid and throw everything they have at the XMG blockchain with whatever hardware and software they have, yes it will kill the block rewards and be self-defeating. We see this kind of thing already. Excessive hashpower can be directed at the XMG multipool using another mining algorithm though and people can get paid in XMG, so it need not be a problem.
