PATH in KDE

[gb spam]

I have a file under /etc/profile.d that sets up my PATH.  For some
reason, KDE does not seem to pick this up under FC5T2, whereas FC4 has
no problem with the same file.

Consequently apps launched by KDE can't themseleves launch anything
from my PATH.

So, apart from the obvious "What happened to change the KDE
behaviour?" is there another way that I should be setting my PATH?