I installed with the latest installer on a WinXP computer and some applications, like digikam were complaining that sasl2.dll is not found. I saw that libsasl2.dll is installed, and just making a copy of it as sasl2.dll made it work.
*** Bug 227998 has been marked as a duplicate of this bug. ***
This has been fixed now with a new cyrus-sasl package which also contains a sasl2.dll (which is essentially the same as the libsasl2.dll). To fix this for you, please either rename libsasl2.dll to sasl2.dll or download http://winkde.org/pub/kde/ports/win32/releases/stable/latest/cyrus-sasl-2.1.22-2-bin.tar.bz2 and unpack this into your KDE installation directory.
That worked, thanks! :) It's great to have KDE programs on Windows, makes the platform a bit more usable for me :)