This article just shows the pitfalls of Exchange Server and Windows Server being out of sync. Small shops like me that wanted to wait for Win2008 before doing Ex2007 couldn't do to the one year delay. Now I have to basically do a forklift upgrade and rebuild the box from scratch. I find that to be a poor solution. If all these issues are known before the release of either Win2008 or Ex2007SP1 why can't they be resolved. Even having an automated uninstall of Ex (saving data), upgrade to Win2008 then reinstall of 2007SP1 and restore data would be an alternative. The other way would be disable Ex2007 do upgrade to Win2008 and then reinstall Ex2007SP1, this is assuming the EX2007SP1 install is intelligent enough to know what has to be repaired on the new OS.
I think this should have been communicated from day one, just like the fact that you couldn't in place upgrade from Ex2003 to Ex2007. If I had known this was 100% I probably would have waited until I could go through the combined pain of Win2008 and Ex2007 upgrades instead of doing them individually and getting the joy of the pain twice.