Hey Fuzzy....
Um, about it being MY computer, well that is a phrase. I agree, it is the Companies property and everything, which is on it, belongs to the Company. However, if you migrate My Computer, it is a laptop by the way, then every file on it should become accessible as it was before. My work files, i.e. the Company's files should be ready to go right away, not some sort of well, it is there, but you have to find it OR even setup the computer the way you had it before... but we have beat that horse dead.
What we are talking about, however, is the fact that IT should take into account the productivity gains or losses, whenever IT decides to perform some sort of modification to the IT infrastructure. Like I said, the IT department at my company is NOT a very good one. I have worked at Ford, where the IT group I worked with took all these things into account. Of course, when you are talking upgrading thousands of PCs to the next OS, you kind of have to as well as making it easy.