displayconfig-gtk crashed with IndexError in getSize()

[Jenny]

Binary package hint: displayconfig-gtk

8.04
Last boot I changed low-resolution to some common screen type 1024x*** and had to logout. When I logged in the virtual screen is bigger then the real screen. Tried to use program>other>screen&graphic but it chrashed instead.
I want to change my screensize so it's usable. BTW, how do I find drivers??

ProblemType: Crash
Architecture: i386
Date: Mon Mar 31 16:11:28 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/bin/displayconfig-gtk
InterpreterPath: /usr/bin/python2.5
Package: displayconfig-gtk 0.3.9
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/displayconfig-gtk
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin
 LANG=sv_FI.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/displayconfig-gtk']
SourcePackage: displayconfig-gtk
Title: displayconfig-gtk crashed with IndexError in getSize()
Uname: Linux 2.6.24-12-generic i686
UserGroups: