In practice, there are some [issues with upgrading from RHL to Fedora via apt/yum]:
http://www.redhat.com/archives/fedora-list/2004-January/msg02421.html
The original question was about upgrading from FC1 to FC2 via apt/yum. I think the original answer of "in theory, no problem" may or may not be right but is reasonable. The fact that X or Y problem existed upgrading from a previous (not even the latest) version of RHL is not relevant to that question, nor does it imply that the same problems will continue to exist.
-- Rodolfo J. Paiz rpaiz@xxxxxxxxxxxxxx http://www.simpaticus.com