I'm not sure if the 108 data causes this, I downloaded the 108 client from the download section.
The 108 client release misses some stuff like mapdata and object, not sure if this can cause it because I really have no idea at all where I can download a new mapdata for 108 (it's currently in the source).
I have never had any lagg myself but other players do and some dc a lot.
Also sometimes when I teleport to the wilderness (lava dragons) it freezes my client and I get this error:
Code:
java.lang.NullPointerExceptionError: T2 - 81,73,126 - 11,3087,3488 - -26,-47,-112,7,-1,9,-53,2,0,-1,-1,
at Entity.setPos(Entity.java:4)
at Client.method117(Client.java:10423)
at Client.updatePlayers(Client.java:11576)
at Client.parsePacket(Client.java:11805)
at Client.mainGameProcessor(Client.java:3386)
at Client.processGameLoop(Client.java:2792)
at ClientEngine.run(ClientEngine.java:285)
at Client.run(Client.java:5071)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-3" java.lang.ArrayIndexOutOfBoundsException: -65
at Client.method120(Client.java:10500)
at Client.method146(Client.java:13030)
at Client.drawGameScreen(Client.java:8731)
at Client.processDrawing(Client.java:9889)
at ClientEngine.run(ClientEngine.java:293)
at Client.run(Client.java:5071)
at java.lang.Thread.run(Unknown Source)