[TYPO3-english] Update from typo3 4.5 to 6.0

[hinterindien at gmx.net]

Hi list, 

I just updated from typo3 4.5 to 6.0 following the guidlines here: http://typo3.org/documentation/document-library/guides/doc_guide_install/2.0.2/view/1/4/#id1900469

Backend works fine now, but in Frontend I get:

The requested URL /2.0.html was not found on this server.

Any idea where this could come from?

(needless to mention that I never used "2.0.html" in my whole project..)

Thanks 
Nicolai