Oh okay then. I searched (boattloads of magic.. :P) about this issue online before posting it here. But none of the links gave a definite answer or any way to resolve the issue.
Right, it can be tricky interpreting those postings.
What illuminated/definitized it for me was the mention that 2.4 is to 2.2 like 1.x is to 2.x, in other words, many significant API changes , meaning much work for mod_perl developers to do, not simple typos I can fix