if you try to upload a u2d file for 7.403 into 7.450 it tells that it has been successfully imported !
you should have some initial test to reply in the ui that the imported up2date file is wrong !
thx
edit1: in the log I've of course an almost correct message (should be something like we can't downgrade...):
2009:06:16-18:42:53 asg auisys[11816]: id="371B" severity="info" sys="system" sub="up2date" name="up2date package is already installed, removing" status="failed" file="/var/up2date//sys/u2d-sys-7.403.tgz.gpg" action="preinst_check" package="sys"
2009:06:16-18:42:53 asg auisys[11816]: id="371D" severity="info" sys="system" sub="up2date" name="No up2date packages available for installation" status="failed" action="preinst_check" package="sys"
2009:06:16-18:42:59 asg auisys[11816]: id="3716" severity="info" sys="system" sub="up2date" name="Up2date Package Installer finished, exiting"
