Ok, I did a make install-strip and - yes - it worked fantastic (including german localization). Hope I didn't bothered you too much but for me LyX is a very important tool and I didn't want to disturb my existing LyX installation (I did not expect to: I did not have troubles with installation or updates since the time I started to use LyX some years before).
Anyway, I would like to thank all of you who took care. Thanks again Stephan -- Stephan E. Schlierf M.A. chief concept & design developer speed2web GmbH Gottlieb-Keim-Str. 23 95448 Bayreuth phone: ++49 921 99008612 fax: ++49 921 99008670 web: http//www.speed2web.de