Severe Errors Lagging Out Server

this is what i get randomly...no apparent reason and dosent seem to be about the one pluggin i have witch might i add is working 100% fine
like i said this happens out of nowhere and causes a huge Lag spike
this is the craftbukkit-0.0.1-snapshot version of CraftBukkit

[SEVERE] java.net.SocketException: Software caused connection abort:
socket write error
2011-03-28 20:04:10 [SEVERE] at
java.net.SocketOutputStream.socketWrite0(Native Method)
2011-03-28 20:04:10 [SEVERE] at
java.net.SocketOutputStream.socketWrite(Unknown Source)
2011-03-28 20:04:10 [SEVERE] at
java.net.SocketOutputStream.write(Unknown Source)
2011-03-28 20:04:10 [SEVERE] at java.io.DataOutputStream.write(Unknown Source)
2011-03-28 20:04:10 [SEVERE] at net.minecraft.server.Packet.a(SourceFile:148)
2011-03-28 20:04:10 [SEVERE] at
net.minecraft.server.NetworkManager.e(SourceFile:130)
2011-03-28 20:04:10 [SEVERE] at
net.minecraft.server.NetworkManager.d(SourceFile:9)
2011-03-28 20:04:10 [SEVERE] at
net.minecraft.server.NetworkWriterThread.run(SourceFile:83)
2011-03-28 20:04:10 [SEVERE] java.net.SocketException: Software caused
connection abort: recv failed
2011-03-28 20:04:10 [SEVERE] at
java.net.SocketInputStream.socketRead0(Native Method)
2011-03-28 20:04:10 [SEVERE] at java.net.SocketInputStream.read(Unknown Source)
2011-03-28 20:04:11 [SEVERE] at java.net.SocketInputStream.read(Unknown Source)
2011-03-28 20:04:11 [SEVERE] at java.io.FilterInputStream.read(Unknown Source)
2011-03-28 20:04:11 [SEVERE] at net.minecraft.server.Packet.b(SourceFile:113)
2011-03-28 20:04:11 [SEVERE] at
net.minecraft.server.NetworkManager.f(SourceFile:155)
2011-03-28 20:04:11 [SEVERE] at
net.minecraft.server.NetworkManager.c(SourceFile:9)
2011-03-28 20:04:11 [INFO] yegg lost connection: disconnect.genericReason
2011-03-28 20:04:11 [SEVERE] at
net.minecraft.server.NetworkReaderThread.run(SourceFile:62)
2011-03-28 20:04:14 [WARNING] Can't keep up! Did the system time
change, or is the server overloaded?
2011-03-28 20:09:44 [WARNING] Can't keep up! Did the system time
change, or is the server overloaded?
2011-03-28 20:09:46 [WARNING] Can't keep up! Did the system time
change, or is the server overloaded?
2011-03-28 20:13:55 [SEVERE] java.net.SocketException: Software caused
connection abort: socket write error
2011-03-28 20:13:55 [SEVERE] at
java.net.SocketOutputStream.socketWrite0(Native Method)
2011-03-28 20:13:55 [SEVERE] at
java.net.SocketOutputStream.socketWrite(Unknown Source)
2011-03-28 20:13:55 [SEVERE] at
java.net.SocketOutputStream.write(Unknown Source)
2011-03-28 20:13:55 [SEVERE] at java.io.DataOutputStream.write(Unknown Source)
2011-03-28 20:13:56 [SEVERE] at net.minecraft.server.Packet.a(SourceFile:148)
2011-03-28 20:13:56 [SEVERE] at
net.minecraft.server.NetworkManager.e(SourceFile:130)
2011-03-28 20:13:56 [SEVERE] at
net.minecraft.server.NetworkManager.d(SourceFile:9)
2011-03-28 20:13:56 [SEVERE] at
net.minecraft.server.NetworkWriterThread.run(SourceFile:83)
2011-03-28 20:13:56 [SEVERE] java.net.SocketException: Software caused
connection abort: recv failed
2011-03-28 20:13:56 [SEVERE] at
java.net.SocketInputStream.socketRead0(Native Method)
2011-03-28 20:13:56 [SEVERE] at java.net.SocketInputStream.read(Unknown Source)
2011-03-28 20:13:56 [SEVERE] at java.net.SocketInputStream.read(Unknown Source)
2011-03-28 20:13:56 [SEVERE] at java.io.FilterInputStream.read(Unknown Source)
2011-03-28 20:13:56 [SEVERE] at net.minecraft.server.Packet.b(SourceFile:113)
2011-03-28 20:13:56 [SEVERE] at
net.minecraft.server.NetworkManager.f(SourceFile:155)
2011-03-28 20:13:56 [SEVERE] at
net.minecraft.server.NetworkManager.c(SourceFile:9)
2011-03-28 20:13:56 [INFO] yegg lost connection: disconnect.genericReason
2011-03-28 20:13:56 [SEVERE] at
net.minecraft.server.NetworkReaderThread.run(SourceFile:62)

(Windows Vista if that matters)