8/30/2011
Updated js/i18n/grid.locale-en.js file to use "," for thousands separator. Lines 90-92:
		integer : {thousandsSeparator: ",", defaultValue: '0'},
		number : {decimalSeparator:".", thousandsSeparator: ",", decimalPlaces: 2, defaultValue: '0.00'},
		currency : {decimalSeparator:".", thousandsSeparator: ",", decimalPlaces: 2, prefix: "", suffix:"", defaultValue: '0.00'},

7/21/2011
This is a custom build of jqGrid 4.1.1.  This is the 4.1.1 source along with 2 changes which can be found here:

https://github.com/tonytomov/jqGrid/commit/1b4b0ade61cd4943ad4f4485a1c4204a4995acd9
https://github.com/tonytomov/jqGrid/commit/57b758590f2fdb205345635fdef1c7de040fc5d7

The source was downloaded from here:
https://github.com/tonytomov/jqGrid/tree/v4.1.1

