Server eating RAM. Causes a crash..

Hello.

My server have started to take up all the RAM I give it, I give it 1024 MB and after maybe 12 hours of uptime its taking over 1.1GB RAM for some reason. I have no idea why and it starts spamming "[WARNING] Can't keep up! Did the system time change, or is the server overloaded?" for an hour and then crashes. This also gives the server ALOT of lag.

This is the error message Ive managed to find this far.. "2011-07-15 14:23:26 [SEVERE] java.lang.OutOfMemoryError: Java heap space
2011-07-15 14:24:19 [SEVERE] at net.minecraft.server.RegionFile.<init>(SourceFile:86)"

Some information about the server.
It's hosted on my PC.
Windows 7 x64.
Running Java 1.6.0_26.
CraftBukkit Build #953
I run CB with this command. "@ECHO OFF
SET BINDIR=%~dp0
CD /D "%BINDIR%"
"%ProgramFiles%\Java\jre6\bin\java.exe" -Xincgc -Xmx1G -jar craftbukkit-0.0.1-SNAPSHOT.jar
PAUSE"

Plugins: AntiCreeper, BackToBody, BigBrother, BorderGuard, CellMod, CraftBookCommon, CraftBookCircuits, CraftBookMechanisms, CraftBookVehicles, CraftBukkitUpToDate, Day, DeathControl, DeathMessagePlugin, DispNameChanger, FirstJoin, GiveMeWool, iConomy, iConomyChestShop, Kitz, Lockette, mcMMO, RemoteToolkitPlugin, MobBounty, motd, MotherNature, Permissions, PermissionsSql, SimpleSave, SpawnControl, SpyerAdminCommands, SpyerFun, Whitelist, WorldEdit, WorldGuard, iChat, SpyerAdmin

Maybe there is some plugins that dont like each other? Well I hope you could help me out.

//Y

 

i got the same problem

 

Starting to think that it might be easiest to just remember to restart the server after 6-8 hours..

 

My server crashed yesterday too, but i fixed it by using a dev build.
Recent changes: http://ci.bukkit.org/job/dev-CraftBukkit/
#996 - Don't use weak/soft references for keys, attempt to lessen memory impact further
#993 - Fixed huge memory leak (gigabytes/hour!) by placing a bukkit under the ceiling.
#987 - Possibly fixed crashes caused by tile entities under certain circumstances again.