black xlogin input fields

[ignatios%cs.uni-bonn.de@localhost]

Hello,

after updating a machine from 6.1.5 to 9.3_STABLE, the
Xlogin input fields are black on black. They work normally,
if you login blindly...

Any Xresources setting I could try?

I should maybe mention that this is remote xdm.

Regards,
	-is