This seems to be known to a last.fm forum:
http://www.last.fm/group/Amarok+Users/forum/18538/_/297183
>From how I understand the discussion, Amarok could use a better problem
report. The user should be told if there is a problem with the
credentials (username + password), or with the connection to
Submitting to last.fm worked fine in Amarok 1.4.5. It stopped working
when I enabled the Ubuntu Backports.
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amarok 1.4.6 fails to submit to last.fm
https://bugs.launchpad.net/bugs/130612
You received this bug notification because you are a member of Ubuntu
Backporters, which is the registrant f
Public bug reported:
When a track is played in Amarok, the following message appears in the
information field on the bottom of the screen:
Failed to submit several tracks to last.fm.
No tracks are reported to the last.fm site.
I haven't made any changes to the Amarok configuration, that I'm aw