Sometimes Ubuntu cannot boot

Binary package hint: mountall

Ubuntu lucid sometimes cannot boot, this usually happens after install some new packages or after install some updates, so will this issue be related to package management in any way?
When the issue occurs, the playmouth boot splash is showed and never ends, if I hit enter, then splash goes away and this message appears:
"mountall: mountall.c:2726: Not reached assertion failed in boredom_timeout"
After this Ubuntu drops to a maintenance shell.

ProblemType: Bug
Architecture: i386
Date: Tue Mar 23 17:23:04 2010
DistroRelease: Ubuntu 10.04
InstallationMedia: Error: [Errno 13] Permiso denegado: '/var/log/installer/media-info'
NonfreeKernelModules: wl
Package: mountall 2.8
ProcEnviron:
 LANG=es_ES.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
SourcePackage: mountall
Uname: Linux 2.6.32-16-generic i686