Help errors.

After some time my server gets this error and no one can login.

Code:

2011-06-11 10:12:34 [SEVERE] java.lang.OutOfMemoryError: unable to create new native thread
2011-06-11 10:12:34 [SEVERE]     at java.lang.Thread.start0(Native Method)
2011-06-11 10:12:34 [SEVERE]     at java.lang.Thread.start(Thread.java:614)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetworkManager.a(NetworkManager.java:182)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:825)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.Packet255KickDisconnect.a(SourceFile:26)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:75)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetworkListenThread.a(SourceFile:105)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:399)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:309)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
2011-06-11 10:12:34 [SEVERE] Unexpected exception
java.lang.OutOfMemoryError: unable to create new native thread
    at java.lang.Thread.start0(Native Method)
    at java.lang.Thread.start(Thread.java:614)
    at net.minecraft.server.NetworkManager.a(NetworkManager.java:182)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:825)
    at net.minecraft.server.Packet255KickDisconnect.a(SourceFile:26)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:75)
    at net.minecraft.server.NetworkListenThread.a(SourceFile:105)
    at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:399)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:309)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
2011-06-11 10:12:34 [SEVERE] Exception in thread "Connection #75 read thread"
2011-06-11 10:12:34 [SEVERE] java.lang.OutOfMemoryError: unable to create new native thread
2011-06-11 10:12:34 [SEVERE]     at java.lang.Thread.start0(Native Method)
2011-06-11 10:12:34 [SEVERE]     at java.lang.Thread.start(Thread.java:614)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetworkManager.a(NetworkManager.java:182)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetworkManager.g(NetworkManager.java:159)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetworkManager.c(NetworkManager.java:259)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetworkReaderThread.run(SourceFile:84)
2011-06-11 10:12:34 [SEVERE] java.net.SocketException: Broken pipe
2011-06-11 10:12:34 [SEVERE]     at java.net.SocketOutputStream.socketWrite0(Native Method)
2011-06-11 10:12:34 [SEVERE]     at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
2011-06-11 10:12:34 [SEVERE]     at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
2011-06-11 10:12:34 [SEVERE]     at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
2011-06-11 10:12:34 [SEVERE]     at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
2011-06-11 10:12:34 [SEVERE]     at java.io.DataOutputStream.flush(DataOutputStream.java:123)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetworkWriterThread.run(SourceFile:116)

And then i get this error all the time, it spams my log.

Code:

2011-06-11 10:12:34 [SEVERE] java.net.SocketException: Broken pipe
2011-06-11 10:12:34 [SEVERE]     at java.net.SocketOutputStream.socketWrite0(Native Method)
2011-06-11 10:12:34 [SEVERE]     at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
2011-06-11 10:12:34 [SEVERE]     at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
2011-06-11 10:12:34 [SEVERE]     at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
2011-06-11 10:12:34 [SEVERE]     at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
2011-06-11 10:12:34 [SEVERE]     at java.io.DataOutputStream.flush(DataOutputStream.java:123)
2011-06-11 10:12:34 [SEVERE]     at net.minecraft.server.NetworkWriterThread.run(SourceFile:116)

 

http://forums.bukkit.org/threads/you-need-help-we-need-this-information-to-help-you.2018/

 

OS-CentOS 5.2 64bit
Craftbukkit 860
running the server with this command: java -Xms2048M -Xmx2560M -jar Craftbukkit.jar nogui
Plugins that may cause some memory problems: BigBrother, Backup, AutoSave, dynmap.

 

I am also having this problem on my server.

(java.net.SocketException: Broken pipe)

 

Can someone help? I'm still having it.