Start gnorpm, select preferences -> rpmfind. Vendor is displayed as "Olivier Fourdan <fourdan>" rather than something sensible. FWIW, same screen, has the following nit-nots: 1) Download dir should probably be per-system, not per-user. Rationale is that only root can install rpm's anyways, so there's little reason to download to per-user directory for future root-only install. 2) no upgrade list should include (at least) kernel, dunno what shlibs is either.
I am unable to duplicate this problem with any official gnorpm release, or gnorpm cvs. It sounds like a double memory free however so could be yet another rpmlib bug or something triggered by an obscure cause.
Again, properly formed bug reports against rpm will get issues resolved. From gnorpm-0.96-1: The vendor is now displayed correctly, may have been a problem with data returned from the URL. Default for Download dir is still "/root/rpms" No upgrade list still does not include kernel.
I am unable to reproduce this in any version. Marking WORKSFORME.