On startup:

2012-10-04 11:53:32 [INFO] [GriefPrevention] Enabling GriefPrevention v6.5.2
2012-10-04 11:53:32 [INFO] GriefPrevention: Grief Prevention enabled.
2012-10-04 11:53:32 [INFO] GriefPrevention: Because there was a problem with the database, GriefPrevention will not function properly.  Either update the database config settings resolve the issue, or delete those lines from your config.yml so that GriefPrevention can use the file system to store data.

On Shutdown:

2012-10-04 11:58:57 [INFO] [GriefPrevention] Disabling GriefPrevention v6.5.2
2012-10-04 11:58:57 [SEVERE] Error occurred while disabling GriefPrevention v6.5.2 (Is it up to date?)
java.lang.NullPointerException
	at me.ryanhamshire.GriefPrevention.GriefPrevention.onDisable(GriefPrevention.java:1955)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:219)
	at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:400)
	at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:400)
	at org.bukkit.plugin.SimplePluginManager.disablePlugins(SimplePluginManager.java:393)
	at org.bukkit.craftbukkit.CraftServer.disablePlugins(CraftServer.java:261)
	at net.minecraft.server.MinecraftServer.stop(MinecraftServer.java:327)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:436)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)