The "version" list on the query page doesn't have an entry for "6.0".
*** Bug 2496 has been marked as a duplicate of this bug. *** It is not (yet) possible to sumbit 6.0-related bugs
It works for me now...
I just cleared my disk and memory caches in Netscape and went to http://www.developer.redhat.com/bugzilla/query.cgi The version list still ends at "5.9".
OK, I take back the last comment. "6.0" is in the list.