Apt, and delta rpm

Hi, I'm wondering if there are any apt repository folks, from gwdg.de on this list. Updating via apt now, gets the following results: <snip lot of equivalent entries snip> 50:libsmbclient-32bit ########################################### [ 94%] error: unpacking of archive failed: cpio: Bad magic If I use rpm directly on the above, I get that the reason for the break, is that the package is a delta rpm, and that it needs to be converted to an rpm first. So my question is, what is the point of having delta rpm's in apt's repository, if it can't do it?