Problem tracking campaigns

Hi,

I have problems tracking campaigns.
I use the standard (in global config)
campaign_var_name = piwik_campaign
campaign_keyword_var_name = piwik_kwd
and my URL looks like this:
http://www.example.com/?piwik_campaign=Adwords-CPC&piwik_kwd=test

It worked exactly once, since then I can click on the link (with emptied cache & cookies), nothing happens…
Screenshot

I am using Piwik 1.2.1.

Greetings,
Joe

PIwik tracks referrer once per visit, so wait 30min before your next test: Troubleshooting - Analytics Platform - Matomo

Tried it from different PCs, asked friends to open that link.
No difference. Still only that one entry.

thx,
joe

UPDATE:
Obviously it was an error in reasoning from my part. In order to test the campaign-function, I set up a test-link within my own website. And that doesn´t work. It must be a link from outside, then it works fine.

thx,
Joe