Thank you for the reply.
I have 64G RAM on my system
Have btw Windows forgotten to mention it
But the error if i do not enter flushdns in my startup bat file is:
Couldn't verify username because servers are unavailable
The startup line:
java -Xmx30G -jar craftbukkit.jar -o true
PAUSE
gives this error:
http://pastebin.com/PN3FCqdbOriginal is longer, it goes with everyplugin and get the message Permgen or something
Same happens if i change it into -Xmx30720M
Server works fine with my startup bat file but i dont even know how it works
Sometimes it gives me error in console like:
Did the system time change or can't the server keep up