temporarily suspending RHCA related posts

I'll review the legal notes to make sure I am not violating anything. I was under the impression that it should be fine, since I haven't posted anything that I've signed an NDA for. I couldn't be posting from the training manual because I don't have one, and all the references here are basically from google/lab/RedHat docs. But, just to get rid of my FUD, I'll check the legal notes and consult with people who are expert in this area. Sorry.