Unable to download uploaded artifact from repository

Reported from the dev list by Piotr Szwed:

After uploading an artifact to the newly created repository, I am unable
to download it. The problem seems to be in the URL generated by Jetty.

When I click on the particular artifact's URL, I get the following link:
//
repository/playground/com/gerrit-architecture/1.0/gerrit-architecture-1.0.zip

which results with the following message:

*Problem accessing
//repository/playground/com/gerrit-architecture/1.0/gerrit-architecture-1.0.zip.
Reason: Not Found*
After removing the first slash "/" from the URL - downloading
starts automatically. So I suspect that one of the "/" is redundant and
shouldn't be generated.

my default config entry seems to be fine:

./conf/archiva.xml:<location>/mnt/localdata/gerrit/archiva/apache-archiva-js-1.4-M3/repositories/playground</location>