Hi. I am in a bit of a state here and really need someones help !!

I bought a new Dell Laptop some weeks ago and am using Vista home premium. I dowloaded Limewire free, the same day and was getting a message coming up every minute or so saying that one or more files are invalid. I did not think to ask here for help and after failing to uninstall properly (the message kept popping up) I did a system restore and the message stopped !!

Today I was brave and downloaded Limewire again and the same thing is happening !! Please please please can someone help me sort out this problem XX!!

I have copied the error message

LimeWire version 4.16.6
Java version 1.6.0-oem from Sun Microsystems Inc.
Windows Vista v. 6.0 on x86
Free/total memory: 31228408/33357824
com.limegroup.gnutella.gui.GUILoader$StartupFailed Exception: file [LimeWire.jar] has hash of [F73A5406A60A48F69E99F10AFDC368F8] instead of expected [A00EAB0AE1132B710BC84BE0CFDE56AF]
at com.limegroup.gnutella.gui.GUILoader.verifyHashes( GUILoader.java:318)
at com.limegroup.gnutella.gui.GUILoader.sanityCheck(G UILoader.java:284)
at com.limegroup.gnutella.gui.GUILoader.load(GUILoade r.java:57)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.limegroup.gnutella.gui.Main.main(Main.java:44)
STARTUP ERROR!