Gentlemen: I am trying to compile gnuradio this afternoon and running into two issues, both of which are my naivety with yum. The first is that yum on one of my computers is telling me that I have enabled gpg keys. So, I run the command that yum indicates, which is rpm --import public.gpg.key and rpm replies: error: public.gpg.key: import read failed. Next, I try to be able to turn this feature on and off as desired. So, I go into /etc/yum.conf and change the line: gpgcheck=1 to gpgcheck=0 or I comment the line out with a '#'. and yum still tells me I need the key even after rebooting the system (shouldnt have been necessary, but I am trying everything). So, I guess I would appreciate knowing where I am going wrong. The second issue concerns swig. FC3 installed version 1.3.21 and gnuradio ./configure reports that I need swig version 1.3.22. So, the question is, how do I go about telling yum that I need the more updated version of swig and how do I tell what the version is? I can see that ./configure has some tricky programmatical way of determining the version of swig, but I dont grok it yet. There must be a simple way of checking the version of things like swig in a simple straight forward manner, and I appreciate it if someone could tell me what that might be. With Respect, Charles