Do you have the Slackware equivalent of the libgssapi-krb5-2 ( http://packages.ubuntu.com/lucid/libgssapi-krb5-2 ) package installed? If so, can you send me a listing of all files that it installs on the system?
If this package is not needed for KDE3.5.10 under Slackware then I will see what is needed to remove it as a build requirement.
No such package is installed in Slackware.
There is a kerberos (krb5) package available in the slackbuilds repository.
I could build the package and send you a package listing, but krb5 is not a requirement in Slackware.
Let me know what you need.