Description of problem: This may NOT be an RHN issue and may lie
elsewhere -- feel free to forward as necessary.

With RHEL3, the kernel on the distro-media is 2.4.21-4.EL; soon after
the release of RHEL3 came the first kernel errata, which was the
2.4.21-4.0.1.EL -- so far, so good; looks like a "regular" distro. 
Typically I find I can run "up2date -u" to upgrade packages and then
run it _again_ to verify nothing new came in... and it usually tells
me "no new packages" the second time I run "up2date -u".

The problem with RHEL3 is that after running "up2date -u" (following a
call to rhn_register, of course) the SECOND time (e.g., the "did
anything new get posted?" check), an error message is thrown:

Testing package set / solving RPM inter-dependencies...
########################################
RPM package conflict error.  The message was:
Test install failed because of package conflicts:
package kernel-2.4.21-4.0.1.EL is already installed

... this is new behavior.  IMO, the second "up2date -u" should simply
say "no new packages".

Version-Release number of selected component (if applicable):
# rpm -q kernel up2date
kernel-2.4.21-4.EL
kernel-2.4.21-4.0.1.EL
up2date-4.0.1-1

How reproducible: 100% (always)

Steps to Reproduce:
1. everything-install on RHEL3 (ia64 for sure, don't know about x86)
2. rhn_register
3. up2date -u # gets all the package updates
4. up2date -u # checks for new packages -- this one FAILS