CFthread access trouble

Hi. I'm in Crystaltech hosting from many years. I've a site that use CFThread, but since a day every time a execute a query inside cfthread server say:
access denied (coldfusion.sql.DataSourcePermission xxx)

Stack:

quote:

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java.security.AccessControlException: access denied (coldfusion.sql.DataSourcePermission xxx) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323) at java.security.AccessController.checkPermission(AccessController.java:546) at coldfusion.security.SecurityManager.checkPermission(SecurityManager.java:210) at coldfusion.sql.DataSrcImpl.check(DataSrcImpl.java:113) at coldfusion.sql.DataSrcImpl.getCachedConnection(DataSrcImpl.java:119) at coldfusion.sql.DataSrcImpl.getConnection(DataSrcImpl.java:108) at coldfusion.sql.SqlImpl.execute(SqlImpl.java:297) at coldfusion.tagext.sql.QueryTag.executeQuery(QueryTag.java:831) at coldfusion.tagext.sql.QueryTag.doEndTag(QueryTag.java:521) at cftest2ecfm1871281927$func_CFFUNCCFTHREAD_CFTEST2ECFM18712819271.runFunction(D:\Inetpub\xxx\sms\test.cfm:12) at coldfusion.runtime.UDFMethod.invoke(UDFMethod.java:418) at coldfusion.runtime.UDFMethod$ArgumentCollectionFilter.invoke(UDFMethod.java:324) at coldfusion.filter.FunctionAccessFilter.invoke(FunctionAccessFilter.java:59) at coldfusion.runtime.UDFMethod.runFilterChain(UDFMethod.java:277) at coldfusion.runtime.UDFMethod.invoke(UDFMethod.java:192) at coldfusion.runtime.UDFMethod.invokeCFThread(UDFMethod.java:174) at coldfusion.thread.Task.invokeFunction(Task.java:239) at coldfusion.thread.Task.run(Task.java:141) at coldfusion.scheduling.ThreadPool.run(ThreadPool.java:201) at coldfusion.scheduling.WorkerThread.run(WorkerThread.java:71)

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Do you know what it may be?
Thanks
Merlinox from Italy