Where did the AT go?

[Peter.Robinson@t-online.de]

Hi list,

after an update of several programs using aptitude, I can no longer type an
 "@" from the keyboard (I have a German QWERTZ keyboard, 105-de). Normally, to 
get the "@" on this keyboard, you need to type ALT-GR-"Q". Other ALT-GR mapped
characters such as "~" and "\" are fine. The X configuration file also seems
the same as ever. 

dpkg-reconfigure console-data did not change anything.

Any other ideas? The problem only affects X, when starting without X I can type "@" as always.

Thanks

Peter