ubiquity crashed with no any action

Binary package hint: ubiquity

Ubuntu dvd live 2010/03/18

ubuntu@ubuntu:~$ lsb_release -rd
Description: Ubuntu lucid (development branch)
Release: 10.04

I-m now into the dvd/live ubuntu on usb stick, sorry, but the keymap is not correct...

I haven-t touch anythings, the system start in live/dvd, I select the language, ubuntu start correctly, but after a few minutes the system crashes w/o any user action, I was only watching the monitor ...

I attach the file /var/log/syslog, but I can-t attach /var/log/partman... ther is not any file partman in my system

ProblemType: Crash
Architecture: amd64
Date: Thu Mar 18 16:54:48 2010
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
InterpreterPath: /usr/bin/python2.6
LiveMediaBuild: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
Package: ubiquity 2.2.5
ProcCmdline: /usr/bin/python /usr/lib/ubiquity/bin/ubiquity --greeter --only
ProcEnviron: Error: [Errno 13] Permission denied: '/proc/4015/environ'
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', '--greeter', '--only']
SourcePackage: ubiquity
Title: ubiquity crashed with AttributeError in on_try_ubuntu_clicked()
Traceback:
 Traceback (most recent call last):
   File "/usr/lib/ubiquity/plugins/ubi-language.py", line 125, in on_try_hostname_clicked
     self.controller.dbfilter.ok_handler()
 AttributeError: 'NoneType' object has no attribute 'ok_handler'
Uname: Linux 2.6.32-16-generic x86_64
UserGroups: