Zoho is not stable after upgrading to sp3

Zoho is not stable after upgrading to sp3

dear,

I have upgraded my zoho with sp3 and |18 package, but I found an error.
Sometimes, if we runned zoho for long time, we caouldnṫ access to zoho properly.
Email was missing, the appearance was corrupt.

If I try to shutdown zoho, an error will show :

Problem in getting AutoDBStart attribute
java.lang.NullPointerException
at com.sun.org.apache.xerces.internal.dom.ParentNode.internalRemoveChild(Unknown Source)
at com.sun.org.apache.xerces.internal.dom.ParentNode.removeChild(Unknown Source)
at com.adventnet.vo.updatemgr.util.PQPostProcessor.updateMysqlConf(PQPostProcessor.java:560)
at com.adventnet.vo.updatemgr.util.PQPostProcessor.install(PQPostProcessor.java:83)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.adventnet.tools.update.installer.Unzipper.contextPostInstallation(Unzipper.java:1259)
at com.adventnet.tools.update.installer.Unzipper.invokePostInstallationClasses(Unzipper.java:1092)
at com.adventnet.tools.update.installer.ApplyPatch.installPatch(ApplyPatch.java:290)
at com.adventnet.tools.update.installer.ApplyPatch.run(ApplyPatch.java:224)
at java.lang.Thread.run(Unknown Source)

What happened? please help me.

thx