Ok, after a complete reformat I got everything working.

However, there's one thing I wonder. I installed with the new 2.1, can I
use the old 1.6 packages with that or will there be problems with
dependencies?

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Checked by AVG Free Edition.
Version: 7.1.362 / Virus Database: 267.13.0/167 - Release Date:
2005-11-11