I think this article describes the problem I'm seeing:
http://scotth.wordpress.com/2008/11/04/eclipse-resolving-dependencies-vs-...
Apparently the new update manager P2 likes to download the feature jars
for every enabled repository, just in case it *might* have to resolve
some dependencies from them. In the interests of improving the Update
Manager's usability, they've made it unusably slow :-(
"great" ;)
I think adding P2 metadata to the repo is supposed to help:
http://wiki.eclipse.org/Equinox_p2_Metadata_Generator . I might have to
look at generating P2 metadata for the langpacks' site.xml.
we need to look into the same for our update site in general.
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/max