No pictures or sound on BBC Iplayer since last update for Ubuntu 10.04LTS

[Stuart Slack]

On my Ubuntu 10.04LTS BBC Iplayer was working OK until the last update to the system a few days ago. Now BBC Iplayer opens but when trying to run a selected programme produces no video or sound. Synaptic Package Manager shows last updates were:
Commit Log for Wed Mar 28 20:37:48 2012

Upgraded the following packages:
adobe-flash-properties-gtk (11.1.102.63-0lucid1) to 11.2.202.228-0lucid1
adobe-flashplugin (11.1.102.63-0lucid1) to 11.2.202.228-0lucid1

Commit Log for Wed Mar 28 20:37:00 2012

Upgraded the following packages:
ca-certificates-java (20100406ubuntu1) to 20100406ubuntu1.1

My laptop with the same Ubuntu 10.04LTS but without the latest update still works OK on BBC Iplayer.

Is there a problem with the updates and can a further update fix it?

[elrond (elrond.)]

Please paste the content of /proc/cpuinfo file. If you want to read that file using a terminal, run this command:
    cat /proc/cpuinfo

[Launchpad Janitor (janitor)]

[Expired for adobe-flashplugin (Ubuntu) because there has been no activity for 60 days.]