Problems with Gnucash, Aqbanking since OSX Leopard upgrade

[A. Osthoff]

Hello,

I have been using Gnucash with Aqbanking under Tiger for about a year 
without a problem. Recently, I bought a new iMac und hence had to do a 
fresh install.
Under OSX 10.5.2 I installed Gnucash 2.2.5, aqbanking 2.3.3_0 with the 
help of Macports 1.6.
I am able to configure the Online Banking access via HBCI, yet every 
time I try to access the account, I get an error message

(...)
Empfangenes Konto: ?????? /  ?????
Aufträge werden kodiert
Aufträge werden gesendet
Fehler beim Senden (Netzwerk-Fehler) --> Error while Sending (Network Error)

Verbindung von Bank trennen
Getrennt
AqHBCI abgeschlossen.

The error is the same across different banks, so I exclude wrong 
configuration as the cause ...

Thanks,
	Andreas