This problem been bugging me for a while now, whenever I start Ryushare links in my JD download list, it starts after the normal 60 seconds wait but then suddenly stops mostly around 38kb and keeps restarting with 2 seconds wait. Sometimes it continues downloading but sometimes it gives back error and stops. I think there's something wrong with the Ryushare plugin, few times I have to refresh my IP to continue, Ryushare probably detects & blocks the repeated multiple connection attempts.

http://jdownloader.org/pastebin/108069
http://jdownloader.org/pastebin/108059

My logging level has always been set to all in settings.