Server freezes then crashes randomly?

So I have a craftbukkit 1.6.4 server and when I play It works
Fine for about 5 minutes then it all goes wrong. All the commands, mobs and chat freeze, and while I'm still able to move, I obviously can't do anything. Then, I get disconnected with a Java socket error screen. Please help I'm getting really annoyed about this!

 

Is there a error in the console or server.log file?

 

How much memory does it have?

 

No the console freezes as well and the only error message is the [Warning] can't keep up

1024 I'n the "run".bat file

 

How much memory is in the laptop?

 

Sound's like it may be running out of memory to me... If you can, try adding more RAM to the server.

If ya need the numbers:

Code:

512 = 512MB
1024 = 1GB
1536 = 1.5GB
2560 = 2.5GB
3072 = 3GB
5120 = 5GB

But don't add more RAM then the machine the server is running on has available! And leave about 1GB RAM for the machine itself to use...

 

Ok that seems to be the problem so I'm gonna buy some more RAM soon