[NBL] Client issue, fully synced .. then suddenly! 340,000 blocks remaining!

[BitHits]

http://gyazo.com/59296bfaa2e0dd19458ac599647e085d.png

[thisnewcoin]

someone forked the blockchain, lol

[Geocen]

Just people screwing with the network trying to attack the blockchain.  It will go away if you leave the client open, eventually the users get removed from your node list.

[HuuHachu]

could it be someone trying to copy the litecoin blockchain into the nibble directory ?

[digitalindustry]

The Dev hyoshi is ontop of it , also we have set up a server dedicated to a node also update your config files , its of negligible concern , but of a concern , its really interesting to see which currency is seen a a threat ?

[BitHits]

Pretty sure this is the relevant section of debug.log

Seems block height just jumps on a few random nodes.

---
trying connection 5.135.159.132:9334 lastseen=6.6hrs
SetBestChain: new best=f942364a2563ba3a878e  height=18467  work=83681940877344  date=05/30/13 06:35:49
===>> nHeight = 18468
SetBestChain: new best=417b0e5ff9dcb17bda60  height=18468  work=83691149945120  date=05/30/13 06:38:56
ProcessBlock: ACCEPTED
Added 380 addresses from 67.168.220.0: 74 tried, 10881 new
Added 396 addresses from 67.168.220.0: 74 tried, 10900 new
Added 213 addresses from 67.168.220.0: 74 tried, 10912 new
Added 382 addresses from 72.78.100.9: 74 tried, 10932 new
Added 392 addresses from 72.78.100.9: 74 tried, 10948 new
Added 194 addresses from 72.78.100.9: 74 tried, 10950 new
Added 406 addresses from 207.12.89.2: 74 tried, 10974 new
Added 402 addresses from 207.12.89.2: 74 tried, 10965 new
Added 197 addresses from 207.12.89.2: 74 tried, 10963 new
Added time data, samples 5, offset -34 (+0 minutes)
nTimeOffset = -13  (+0 minutes)
receive version message: version 60001, blocks=18468, us=x.x.x.x:44309, them=72.11.149.185:8551, peer=72.11.149.185:8550
getblocks 18468 to 00000000000000000000 limit 500
getblocks 18468 to 00000000000000000000 limit 500
Flushing wallet.dat
Flushed wallet.dat 145ms
connection timeout
trying connection 188.162.36.48:8550 lastseen=3.6hrs
getblocks -1 to 00000000000000000000 limit 500
Added 408 addresses from 72.11.149.185: 74 tried, 10998 new
Added 445 addresses from 72.11.149.185: 74 tried, 11015 new
Added 233 addresses from 72.11.149.185: 74 tried, 11022 new
connection timeout
trying connection 166.70.41.107:8550 lastseen=0.9hrs
connection timeout
trying connection 81.156.215.215:9333 lastseen=5.3hrs
connection timeout
trying connection 166.70.41.107:8550 lastseen=0.9hrs
connection timeout
trying connection 128.69.0.182:8550 lastseen=2.6hrs
connection timeout
trying connection 64.107.73.2:8550 lastseen=0.9hrs
Added 1 addresses from 67.168.220.0: 74 tried, 11021 new
connection timeout
trying connection 184.153.8.106:8550 lastseen=0.8hrs
connected 184.153.8.106:8550
send version message: version 60001, blocks=18468, us=x.x.x.x:8550, them=184.153.8.106:8550, peer=184.153.8.106:8550
Added time data, samples 6, offset -7 (+0 minutes)
receive version message: version 60001, blocks=18468, us=x.x.x.x:42808, them=184.153.8.106:8550, peer=184.153.8.106:8550
trying connection 75.131.211.216:8550 lastseen=0.9hrs
Added 318 addresses from 184.153.8.106: 74 tried, 11025 new
Added 388 addresses from 184.153.8.106: 74 tried, 11070 new
Added 165 addresses from 184.153.8.106: 74 tried, 11067 new
connection timeout
trying connection 151.237.52.42:8550 lastseen=0.8hrs
connected 151.237.52.42:8550
send version message: version 60001, blocks=18468, us=x.x.x.x:8550, them=151.237.52.42:8550, peer=151.237.52.42:8550
Added time data, samples 7, offset -8 (+0 minutes)
nTimeOffset = -12  (+0 minutes)
receive version message: version 60001, blocks=18468, us=x.x.x.x:37984, them=151.237.52.42:8550, peer=151.237.52.42:8550
trying connection 70.75.239.1:9333 lastseen=5.3hrs
connected 70.75.239.1:9333
send version message: version 60001, blocks=18468, us=x.x.x.x:8550, them=70.75.239.1:9333, peer=70.75.239.1:9333
Added time data, samples 8, offset -11 (+0 minutes)
Moving 70.75.239.1:9333 to tried
receive version message: version 60001, blocks=361774, us=x.x.x.x:45657, them=70.75.239.1:9333, peer=70.75.239.1:9333
trying connection 178.190.161.226:10333 lastseen=4.8hrs
Added 426 addresses from 70.75.239.1: 75 tried, 11098 new
connection timeout
Added 399 addresses from 70.75.239.1: 75 tried, 11121 new
trying connection 24.49.138.81:9333 lastseen=4.5hrs
Added 308 addresses from 151.237.52.42: 75 tried, 11098 new
Added 334 addresses from 151.237.52.42: 75 tried, 11107 new
Added 168 addresses from 151.237.52.42: 75 tried, 11104 new
Added 183 addresses from 70.75.239.1: 75 tried, 11102 new
ERROR: FetchInputs() : 8fff9c30e2 mempool Tx prev not found e784d727e3
stored orphan tx 8fff9c30e2 (mapsz 1)
connection timeout
trying connection 221.233.196.185:8550 lastseen=1.7hrs
Flushed 11177 addresses to peers.dat  72ms
connection timeout
trying connection 89.155.127.86:8550 lastseen=0.9hrs
Added 1 addresses from 72.11.149.185: 75 tried, 11103 new
ERROR: FetchInputs() : a46c9d961d mempool Tx prev not found 9333eb1859
ignoring large orphan tx (size: 6877, hash: a46c9d961d)
ERROR: FetchInputs() : cad75f7172 mempool Tx prev not found 1c39849890
stored orphan tx cad75f7172 (mapsz 2)
connection timeout
trying connection 83.67.76.64:8550 lastseen=4.2hrs
connection timeout
trying connection 68.58.59.48:9333 lastseen=4.2hrs
CTxMemPool::accept() : accepted 23f867608f (poolsz 1)
received getdata for: tx 23f867608f5b47728de8
connection timeout
trying connection 89.215.146.97:10333 lastseen=16.5hrs
connection timeout
trying connection 24.22.232.249:9333 lastseen=4.2hrs
connection timeout
trying connection 59.127.132.125:8550 lastseen=0.9hrs
connection timeout
trying connection 88.152.220.233:9333 lastseen=5.1hrs
connection timeout
trying connection 89.250.146.130:9333 lastseen=4.4hrs
connection timeout
trying connection 76.102.246.50:9336 lastseen=7.4hrs
ERROR: FetchInputs() : 930b5771b0 mempool Tx prev not found d120b258aa
stored orphan tx 930b5771b0 (mapsz 3)
connection timeout
Added 1 addresses from 67.168.220.0: 75 tried, 11102 new
trying connection 95.96.237.164:8550 lastseen=3.6hrs
Added 1 addresses from 151.237.52.42: 75 tried, 11102 new
ERROR: FetchInputs() : 10f6a43ebb mempool Tx prev not found 6f4ffa730a
stored orphan tx 10f6a43ebb (mapsz 4)
connection timeout
trying connection 218.22.14.66:9333 lastseen=9.5hrs
connection timeout
trying connection 37.191.131.44:8550 lastseen=0.9hrs
connection timeout
trying connection 216.19.188.208:9333 lastseen=4.2hrs
connected 216.19.188.208:9333
send version message: version 60001, blocks=18468, us=x.x.x.x:8550, them=216.19.188.208:9333, peer=216.19.188.208:9333
Added time data, samples 9, offset -3 (+0 minutes)
nTimeOffset = -11  (+0 minutes)
receive version message: version 60001, blocks=361774, us=x.x.x.x:37656, them=216.19.188.208:9333, peer=216.19.188.208:9333
trying connection 64.107.73.16:8550 lastseen=0.9hrs
Added 371 addresses from 216.19.188.208: 75 tried, 11066 new
Added 378 addresses from 216.19.188.208: 75 tried, 11054 new
connection timeout
Added 222 addresses from 216.19.188.208: 75 tried, 11067 new
trying connection 92.206.55.192:8550 lastseen=0.9hrs
ERROR: FetchInputs() : b20ed3ad9f mempool Tx prev not found 5985b453c5
stored orphan tx b20ed3ad9f (mapsz 5)
connection timeout
---

[HuuHachu]

"blocks=361774"


this is the exact length of the litecoin chain ...
I already saw this behavior with the gemcoin wallet.

I don't think someone is using heaps of dedicated hashing power to break this coin. More like someone tried to bypass the downloading of the blockchain by coying its already downloaded litecoin chain.
Or it IS an attack, which just try redirect litecoin hashing power onto your coin ...

Either ways, checkpoints should prevent that, don't they ?