vlc ram memory goes up to 100% when cpu is used by another program

[Gianfranco Costamagna]

Binary package hint: vlc

Step to reproduce:
install a program that uses lot of cpu (like boinc i.e.)

start this program
start a movie into vlc

after a while, vlc starts to take more and more ram (in less than a second or tow it takes 4 GB of ram)

after this the linux kernel kills it to free some memory.

I can attach a valgrind log if needed.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: vlc 1.1.9-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Thu Apr 28 19:46:29 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
ProcEnviron:
 LANGUAGE=it_IT:en
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: vlc
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.