I can not type (using a German keyboard -- Alt Gr Q) the "@" character when using the new Win32 VM 2.8 Build 4 November 4 at http://isgwww.cs.uni-magdeburg.de/~raab/squeak/SqueakExe.zip
Nothing shows up with my 2.9alpha image with updates to 2774 (before the morphic changes). Nothing shows up with 2.9alpha image with all the recent public updates.
Interestingly, if I run a vanilla 2.8 image, I do get the character
Mike