ubiquity crashed with AssertionError in get_autopartition_choice()

[miked]

Binary package hint: ubiquity

8.10 ix386.iso
crash on install

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
InterpreterPath: /usr/bin/python2.5
Package: ubiquity 1.10.10
ProcAttrCurrent: unconfined
ProcCmdline: /usr/bin/python /usr/lib/ubiquity/bin/ubiquity --only
ProcEnviron:
 LANGUAGE=
 PATH=/sbin:/bin:/usr/sbin:/usr/bin
 LANG=en_US.UTF-8
PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', '--only']
SourcePackage: ubiquity
Title: ubiquity crashed with AssertionError in get_autopartition_choice()
Uname: Linux 2.6.27-7-generic i686
UserGroups:

[chinois (chinoisster)]

And when it does not crash, not all my disk are detected on a iP Express Motherboard (ASUS P4GD1)
Only IDE HDD are, not SATAs ones .