This is absolutley true. There is a bug in IE where the fidden columns (colIndex) is not calculated right. In Order to resolve the problem in IE you should move all the hidden coumns at end (in colModel) in your case this should be:

colModel :[
{name:'fullname',index:'fullname', width:250,align:"left",sorttype:"text"},
{name:'username',index:'username', width:250,align:"left",sorttype:"text"},
{name:'officelocation',index:'officelocation', width:180,align:"left",sorttype:"text"},
{name:'stafftype',index:'stafftype', width:180,align:"left",sorttype:"text"},
{name:'userdetail',index:'userdetail', width:50,sortable:false},
{name:'id',index:'id',sorttype:"int", hidden:true}
]

Regards
Tony

I added a an alert to check. Thanks

Kevin

The JSON looks like this (just first record)

{"ROWS":[[1179,"AA, BB","ABBY34@testme.com","","","<img src=\\"\\/includes\\/images\\/buttons\\/ico_edit.gif
\\" style=\\"border: medium none ;\\" alt=\\"edit record\\" \\/>"]

jqGrid 

$("#list").jqGrid(
			{
				url:'/model/administration.cfc?method=getUsers', //CFC that will return the users
				datatype: 'json', //We specify that the datatype we will be using will be JSON
				colNames:['ID','Fullname','Username','Office Location','Staff Type','det'], //Column Names
				/*
				The Column Model to define the data. Note you can make columns non sortable, specify width, alignment, etc.
				We also specify the editoptions, edittype=text shows a nice textbox for inline edit. 
				We have also specified Edit Rules, to say which fields are required/not required for add/edit
				*/
				colModel :[
					{name:'id',index:'id',sorttype:"int", hidden:true},
					{name:'fullname',index:'fullname', width:250,align:"left",sorttype:"text"},
					{name:'username',index:'username', width:250,align:"left",sorttype:"text"},
					{name:'officelocation',index:'officelocation', width:180,align:"left",sorttype:"text"},
					{name:'stafftype',index:'stafftype', width:180,align:"left",sorttype:"text"},
					{name:'userdetail',index:'userdetail', width:50,sortable:false}
				],						   					
				pager: $('#pager'), //The div we have specified, tells jqGrid where to put the pager
				rowNum:20, //Number of records we want to show per page
				rowList:[10,20,30,50], //Row List, to allow user to select how many rows they want to see per page
				sortorder: "asc", //Default sort order
				sortname: "lastname", //Default sort column
				postData: {usertype: 'internal'},
				viewrecords: true, //Shows the nice message on the pager
				imgpath: '/includes/js/jqGrid_themes/basic/images', //Image path for prev/next etc images
				//caption: 'Users', //Grid Name
				height:'auto', //I like auto, so there is no blank space between. Using a fixed height can mean either a scrollbar or a blank space before the pager
				mtype:'GET',
				cellEdit: false,
				recordtext:'Total Records', //On the demo you will notice "7 Total Records" - The Total Reocrds text comes from here
				//pgtext:' of', //You notice the 1/3, you can change the /. You can make it say 1 of 3
				//editurl:"/model/administration.cfc?method=addeditUser", //The Add/Edit function call
				//toolbar:[true,"top"], //Shows the toolbar at the top. We will use it to display user feedback	 			
				//Things to do when grid is finished loading
				loadComplete:function(){
						//We get the Userdata for the grid.
						var recorddata = $("#list").getUserData();
						//show the msg in the toolbar
						$("#t_list").html(recorddata.MSG);
					},
				onCellSelect: function(rowid, iCol, cellcontent) {
					alert(iCol); // this is a test for click
					if (iCol == 5 || iCol == 4 ) {
					//alert(rowid + ":" + iCol +":"+ cellcontent);
					var ret = jQuery("#list").getRowData(rowid); //alert("id="+ret.id+" invdate="+ret.username+"..."); 
					$.nyroModalManual({
					url: 'index.cfm?event=ehAdmin.dspInternalUserEdit',
					ajax: {data: 'userId='+ret.id+'&username='+ret.username+'&fullname='+ret.fullname, type: 'POST'},
					type: 'form',
					modal: false,
					bgColor: '#666666',
					width: 680,
					height: 410,
					minWidth: 680, // Minimum width<strong></strong>
					minHeight: 410, // Minimum height
					//resizeable: true, // Indicate if the content is resizable. Will be set to false for swf
					autoSizable: true,
					closeButton: '<a href="#" class="nyroModalClose" id="closeBut" title="close">Close</a>'
				});
				return false;
					}
				},
				//The JSON reader. This defines what the JSON data returned from the CFC should look like
				jsonReader: {
					root: "ROWS", //our data
                    page: "PAGE", //current page
                    total: "TOTAL", //total pages
                    records:"RECORDS", //total records
					userdata:"USERDATA", //Userdata we will pass back for feedback
					cell: "", //Not Used
					id: "0" //Will default to frist column
					}
				}

Sample of table render

<tr id="1179" class="jqgrow">
	<td title="1179" style="display: none;">1179</td>
	<td title="AA, BB" style="text-align: left;">AA, BB</td>
	<td title="ABBY34@testme.com" style="text-align: left;">ABBY34@testne.com</td>
	<td title=" " style="text-align: left;"> </td><td title=" " style="text-align: left;"> </td>
	<td title="undefined"><img alt="edit record" style="border: medium none ;" src="/includes/images/buttons/ico_edit.gif"/></td>
</tr>