I find it almost inconcievable that some degree of testing with vista has not already been done, while the alpha program and beta program was in operation. It is not a question of asking people to hold off for six months while you start your testing, you should have been doing this (like every other hardware/software vendor wanting to make a profit wherever they can) more than six months ago.

When folks are buying new systems now and near future, they won't have a lot of choice which os it comes with. And you can be sure that those new systems have already gone through a significant amount of testing with all the packaged software they come with. Granted, there will be issues that arise for a while, but generally the systems will function. On the otherhand, upgrading the OS on existing systems may be worth waiting a while for, and doing some research in advance. But those are not the customers that are going to find fault with what you have (or haven`t) done yet.

I hope you manage to come away from this gracefully!