Just for the archive: I didn't get any response. Thus, I assume my issues are bugs and I'm going to report it... Piotr -- Piotr Majdak Institut für Schallforschung Österreichische Akademie der Wissenschaften Reichsratsstr. 17 A-1010 Wien Tel.: +43-1-4277-29511 Fax: +43-1-4277-9296 E-Mail: piotr at majdak.com WWW: http://www.kfs.oeaw.ac.at