Constant crashes (please read)

[Justintime3371]

Hello,

recently (the past few days), my server has been crashing over and over. I was getting 2 errors (the first had to do with computercraft, so I straight up deleted the mod), and the second is this

http://pastebin.com/hvFY3L7C

I could not find out why this happens, all I know is it "crashes" the server every 20 minutes up to a few hours. What I mean by "crash" is that in console it gives multiple Read Timed Out messages, and no one can connect until I restart it. If anyone helps me with this I would be gladly willing to pay some money. My skype is: justintime3371