Auto archiving logging Piwik internals

I Installed Piwik 0.4.2 and everything was fine until, some weeks later, I updtated to Piwik 0.4.3 and started the auto archiving cron job.
After that the reports peaked at 1000+ visits and showed lots of weird data for that day:

Example pages:
/?piwik_campaign=dada
/2?piwik_campaign=efag&piwik_k…
/2?piwik_campaign=aggff&piwik_…
/d?piwik_campaign=ddefg&piwik_…

Example outlinks:
http://piwik.org
http://localhost
http://localhost.tar.gz
http://localhost.zip

Example downloads:
http://piwik.org
http://localhost
http://localhost.tar.gz
http://localhost.zip

Example external websites:
www.phpmyvisites.net
www.phpmyvisites.us
universsimpson.free.fr

Example keywords:
phpmyvisites
demo
ring bourguesan ffb
statistiques site
download
statistiques
soumettre un site orange

It seems like it includes the Piwiks instalation data in the rports.

Can anyone point out a reason for this and how can I remove this data from the DB?

Thanks.

Auto-archiving or updating doesn’t create any sample/fake installation data.

Did you run the visit generator? (misc/generateVisits.php).

You can try:

dropping your archive tables
deleting the fake visits and actions from the corresponding tables
running archiving from the shell to regenerate your archives

|| Did you run the visit generator? (misc/generateVisits.php).
No. At least not to my knowledge.
Only did the steps mentioned.

Will try your suggestions, thanks.