Have you configured the Dell Client Manager solution at all? Meaning, there are BIOS and hardware profile related settings that are affected or controlled by using the DCM. This doesn't sound normal, but I don't have a DCM v7 install to test.
The other error is caused by a what used to be called a notification policy (I forget what the new name is). You can simply disable it, or find out what task or policy is feeding it information (it sounds like an inventory policy). It looks like machines that have not run a particular policy.
I agree that these issues are concerning, but I don't know what you have or have not configured either.
You can see there have been other discussions:
http://forums.altiris.com/mess...id=53694&enterthread=yand
http://forums.altiris.com/mess...id=53630&enterthread=ywhere the issues were lack of configuration, and perhaps misunderstanding of how to configure the DCM.
Don't forget to follow up by reading all the docs:
http://www.delltechcenter.com/page/Dell+Client+Manager