John,
If the import catalog task status is green, Dell catalog is getting downloaded without any problems. If the catalog download fails it will show user a failed task with red cross icon.
0/0 is associated with targets, as import catalog task does not work against any targets it shows 0/0.
After the import catalog task completed, did the Catalog information change under:
Manage -> System Updates -> View Active Catalog
Thanks,
Raj Shresta