What was done was done, and I don't mean to preach how vital backups are to all of us. We should always keep in mind especially in cases of KDE updates, we need to back up the .kde4 hidden folder and also the .config (this folder is important to me). There are times these are not needed and there are times when Texstar announces the necessity for such backups. But sometimes he might forget and it is not even his responsibility to make this announcements as we should really need to understand he is very, very busy. Let's just take the responsibilities ourselves.
I just hope that others who are upgrading to KDE 4.6.3 would have the good sense to read this thread and learn from it. But obviously that is not going to happen so we just have to keep at it.
I hope you sort this small issue out, ternor, and restore your desktop the way it should be for you. Good luck.