upgrade to lucid: login loops jungle sound, mouse and keyboard stop working

[Jasper]

Binary package hint: gdm

After upgrading to Lucid, and several normal reboots (?), the login now consistently crashes at appearance, repeating the drum sound, but with mouse and keyboard not functioning at all. There are some similar bugs like these:

https://bugs.launchpad.net/bugs/555263
https://bugs.launchpad.net/bugs/494394

But somewhat different, i.e. user can still enter something at first.

P.S>. I send the bug file through recovery mode/ ubuntu-bug

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: gdm 2.30.0-0ubuntu5
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Mon May 3 19:34:06 2010
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gdm

[Jasper (japsai)]

This weekend I have set Appearance > Visual effects to "Extra"

[Jasper (japsai)]

Removing my mouse (USB, logitech MX revolution) during start-up enabled me to log-in, then i updated and now the problem seems gone..