You mean "a bug in Excel 2007 that can cause it to produce erroneous answers for a particular multiplication task. ", right? :-D

I also composed a poem this morning: 人登明月已可得，月照离人却依旧。 小楼寂寞心与月，也难如钩也难圆。 （注：后两句郭德刚常说的，借用一下，哈哈:-D）