Often Dc and Operation Time out

i don't know if others ppl got this too, but i often got disconnected and operation time out even though there's nothing wrong with my internet and there's no lagging. can anyone help with this?
http://onigiri.cyberstep.com/_/forum/
http://onigiri.cyberstep.com/_/forum/viewtopic.php?f=15&t=3948
Lynneth wrote:Yesterday, I got Onigiri launcher download failed even after restarting, the problem continues. After DC'ed in party .. I feel bad for my party..
I can't even relogin and join the game .. only now I can.. I didn't know why