Matthew, well, you are correct, of course, that the dialog asking for a reboot has been improved with an option to minimise it, but I still fail to see what the point in not making it closeable might be. This, to me, constitutes "suggesting an immediate reboot".
Anyway, barring a simple, non-explained option to close it, I do like Stefan's suggestion in comment #22 if you really do want people to reboot, as it would make the case for actually rebooting, but still signal that you, the user, is actually in charge. I can't stress enough how important the latter is for me, and has been for all the people I've successfully moved to Ubuntu!
Matthew, well, you are correct, of course, that the dialog asking for a reboot has been improved with an option to minimise it, but I still fail to see what the point in not making it closeable might be. This, to me, constitutes "suggesting an immediate reboot".
Anyway, barring a simple, non-explained option to close it, I do like Stefan's suggestion in comment #22 if you really do want people to reboot, as it would make the case for actually rebooting, but still signal that you, the user, is actually in charge. I can't stress enough how important the latter is for me, and has been for all the people I've successfully moved to Ubuntu!