Vertically stretched faces in GDM - how to fix?

[Adalbert Prokop]

Hello!

I've got an old laptop with F8 on which I use GDM and XFCE4. I have made 
an 64x64 PNG icon for each user and enabled the Face Browser in GDM.
The icons are shown, but GDM does not honour the aspect ratio and 
stretches each icon vertically.

Strangely enough, *sometimes* (after n logins/logouts) all icons appear 
with the correct aspect ratio.

Does anyone have an idea how to fix this behaviour?

Below is my /etc/gdm/custom.conf

[daemon]
GtkModulesList=
AddGtkModules=false

[gui]
MaxIconWidth=64
MaxIconHeight=64

[greeter]
IncludeAll=true
Include=
Use24Clock=true
Quiver=true

-- 
bye
Adalbert

greenpeace free'd the mallocs