Re: The " version `GCC_4.2.0' not found " error

> What does this mean and how do I solve it?

It means that the package you installed (pdftk-1.41-3.fc6.i386.rpm) was
compiled with a gcc other than what is expected on your system. The
dependency checking on the rpm should have caught this, but perhaps
pdftk's spec file did not catch this, or perhaps you foiled it with
some special way your system is set up.

The easiest way to solve it (to me) would be to download
pdftk-1.41-3.fc6.srpm and rebuild it on your system.
(rpmbuild -ba pdftk.spec).

-benjamin