incompatibility between firefox video and pulseaudio

[Krzisch]

Binary package hint: firefox-3.0

I am unable to watch a video on firefox (v. 3.0.10) since my upgrade to Jaunty. It seems that there is a problem with pulseaudio
Please find enclosed the error log :

ALSA lib pcm_pulse.c:626:(pulse_prepare) PulseAudio: Unable to create stream: Trop grand (too big)

ALSA lib pcm_pulse.c:626:(pulse_prepare) PulseAudio: Unable to create stream: Trop grand

ALSA lib pcm_pulse.c:626:(pulse_prepare) PulseAudio: Unable to create stream: Trop grand

mmap() failed: Ne peut allouer de la mémoire
mmap() failed: Ne peut allouer de la mémoire
mmap() failed: Ne peut allouer de la mémoire ...
(unable to allocate memory in french)
firefox: pulse.c :200 : pulse_new: L'assertion « p->context » a échoué. (the assertion "p->context" failed)
Abandon

thanks !

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: nvidia
Package: firefox-3.0 3.0.10+nobinonly-0ubuntu0.9.04.1
ProcEnviron:
 PATH=(custom, user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.28-12-generic i686