Yum & rpm scriplet error

[david walcroft <david_walcroft@xxxxxxxxxxxx>]

I get this error with every update:

error: %postun(ghostscript-8.15.3-4.fc6.i386) scriptlet failed, exit 
status 255
error: %preun(bind-9.3.4-2.fc6.i386) scriptlet failed, exit status 255
error: %preun(openssh-server-4.3p2-14.fc6.i386) scriptlet failed, exit 
status 255

I get the same error with rpm -U,I need to use '--noscripts' to install.

What does it mean and what do I do to fix it.

Thanks   david