No custom fieldtypes in the list. When debug the jQuery source code on GetListItems call, at the ajax call code , received the following error. And this error is intermittent. Status 500, Internal server error.. Do you think this is because something went wrong at server side?
Error message:
xData
{...}
readyState: 4
responseText: "<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><soap:Fault><faultcode>soap:Server</faultcode><faultstring>Exception
of type 'Microsoft.SharePoint.SoapServer.SoapServerException' was thrown.</faultstring><detail><errorstring xmlns="http://schemas.microsoft.com/sharepoint/soap/">Method not found: 'Microsoft.SharePoint.Utilities.SPChunkedStringBuffer Microsoft.SharePoint.SPListItemCollection.GetXmlInternal(Boolean,
System.Collections.Hashtable, Boolean, Boolean)'.</errorstring></detail></soap:Fault></soap:Body></soap:Envelope>"
responseXML: {...}
status: 500
statusText: "Internal Server Error"