My refresh just now gave the following failed catalogs:

Aard Dictionary
Aard Dictionary Devel
Maemo Extras Devel
Mitrandir's Maemo Repository
Opera Catalog

The others, namely Extras Testing, were fine, and a new program called Mappero installed from Extras-Devel.

My opinion is that Something Funny is Going On (tm) and I don't intend to go thru a lot of Shennanigens to fix it because I doubt I am originating the problem.