Server crash bukkit 1185

Server crashed and rolled back and error:

Code:

2011-09-27 17:29:02 [INFO] [PLAYER_COMMAND] HooDDog: /home
2011-09-27 17:29:02 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
2011-09-27 17:29:05 [SEVERE] Exception in thread "Connection #691 read thread"
2011-09-27 17:29:05 [SEVERE] java.lang.OutOfMemoryError: unable to create new native thread
2011-09-27 17:29:05 [SEVERE]     at java.lang.Thread.start0(Native Method)
2011-09-27 17:29:05 [SEVERE]     at java.lang.Thread.start(Thread.java:614)
2011-09-27 17:29:05 [SEVERE]     at net.minecraft.server.NetworkManager.a(NetworkManager.java:182)
2011-09-27 17:29:05 [SEVERE]     at net.minecraft.server.NetworkManager.h(NetworkManager.java:159)
2011-09-27 17:29:05 [SEVERE]     at net.minecraft.server.NetworkManager.c(NetworkManager.java:263)
2011-09-27 17:29:05 [SEVERE]     at net.minecraft.server.NetworkReaderThread.run(SourceFile:77)
2011-09-27 17:29:06 [SEVERE] java.lang.OutOfMemoryError: unable to create new native thread
2011-09-27 17:29:06 [SEVERE]     at java.lang.Thread.start0(Native Method)
2011-09-27 17:29:06 [SEVERE]     at java.lang.Thread.start(Thread.java:614)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.NetworkManager.d(NetworkManager.java:243)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:145)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.Packet254GetInfo.a(SourceFile:16)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:41)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.NetworkListenThread.a(SourceFile:94)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:464)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)
2011-09-27 17:29:06 [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.d(NetworkManager.java:243)
    at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:145)
    at net.minecraft.server.Packet254GetInfo.a(SourceFile:16)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
    at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:41)
    at net.minecraft.server.NetworkListenThread.a(SourceFile:94)
    at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:464)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)
2011-09-27 17:29:06 [SEVERE] Exception in thread "Connection #692 read thread"
2011-09-27 17:29:06 [SEVERE] java.lang.OutOfMemoryError: unable to create new native thread
2011-09-27 17:29:06 [SEVERE]     at java.lang.Thread.start0(Native Method)
2011-09-27 17:29:06 [SEVERE]     at java.lang.Thread.start(Thread.java:614)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.NetworkManager.a(NetworkManager.java:182)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.NetworkManager.h(NetworkManager.java:159)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.NetworkManager.c(NetworkManager.java:263)
2011-09-27 17:29:06 [SEVERE]     at net.minecraft.server.NetworkReaderThread.run(SourceFile:77)
2011-09-27 17:30:25 [INFO] Read timed out
2011-09-27 17:30:35 [INFO] Read timed out
2011-09-27 17:30:46 [INFO] Connection reset
2011-09-27 17:31:13 [INFO] Read timed out
2011-09-27 17:32:01 [INFO] Connection reset
2011-09-27 17:32:20 [INFO] Read timed out
2011-09-27 17:34:58 [INFO] Connection reset
2011-09-27 17:35:24 [INFO] Read timed out
2011-09-27 17:36:48 [INFO] Read timed out
2011-09-27 17:36:49 [INFO] Read timed out
2011-09-27 17:37:05 [INFO] Connection reset
2011-09-27 17:38:45 [INFO] Read timed out

Code:

2011-09-27 17:27:38 [INFO] Read timed out
2011-09-27 17:27:38 [SEVERE] java.net.SocketException: Socket closed
2011-09-27 17:27:38 [SEVERE]     at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:116)
2011-09-27 17:27:38 [SEVERE]     at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
2011-09-27 17:27:38 [SEVERE]     at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
2011-09-27 17:27:38 [SEVERE]     at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
2011-09-27 17:27:38 [SEVERE]     at java.io.DataOutputStream.flush(DataOutputStream.java:123)
2011-09-27 17:27:38 [SEVERE]     at net.minecraft.server.NetworkWriterThread.run(SourceFile:104)

Plugins:
Essentials
Factions
FalseBook_v0_88alpha
ChatManager
ChestShop
LWC
mcMMO
MobArena
PermissionsEx
Residence
xAuth
XcraftGate

can someone help?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

how many RAM does you're server has?

 

3gb

need more?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

what java version + what bits? (32 or 64)

 

If his server has 3GB of ram allocated to it, his java is x64.
You ran out of RAM, what did you do right before the crash?

 

absolutly nothing.....

server is running on linux ubuntu .. can have som problem with it?

and got 32 liinux and java verison is 6

EDIT by Moderator: merged posts, please use the edit button instead of double posting.