It appears that directory indexing has been disabled on your Maven 2 repository, which makes it impossible to use. Attempting to browse the repository via web browser give the following error:
----
An error has been encountered in accessing this page.
1. Server: ejb3unit.sourceforge.net
2. URL path: /maven2/
3. Error notes: NONE
4. Error type: 403
5. Request method: GET
6. Request query string: NONE
7. Time: 2008-10-28 11:36:04 UTC (1225193764)
Reporting this problem: The problem you have encountered is with a project web site hosted by SourceForge.net. This issue should be reported to the SourceForge.net-hosted project (not to SourceForge.net).
If this is a severe or recurring/persistent problem, please do one of the following, and provide the error text (numbered 1 through 7, above):
1. Contact the project via their designated support resources.
2. Contact the project administrators of this project via email (see the upper right-hand corner of the Project Summary page for their usernames) at user-name@users.sourceforge.net
If you are a member of the project that maintains this web content, please refer to the Site Documentation regarding the project web service for further assistance.
NOTE: As of 2008-10-23 directory index display has been disabled by default. This option may be re-enabled by the project by placing a file with the name ".htaccess" with this line:
Options Indexes
----
Just tried this again today and the problem seems to be fixed. I can now browse the repository and (more importantly) add it to Nexus.