Binary package hint: gdm
Using a 9.10 Karmic Koala 64 bit install, attach two monitors in Xinerama (or Nvidia TwinView) of differing resolutions. The post login splash is not properly dimensioned to overlay both screens. It should be scaled so that there are no discontinuities across the two screens - or doubled - one in each screen resized to that screen's resolution.
ProblemType: Bug
Architecture: amd64
Date: Thu Feb 25 14:46:06 2010
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
NonfreeKernelModules: nvidia
Package: gdm 2.28.1-0ubuntu2.1
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-19.56-generic
SourcePackage: gdm
Uname: Linux 2.6.31-19-generic x86_64
Update: I am using Nvidia TwinView. Have not tested this using Xinerama.