some images are translucent

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Run a compositing window manager(compiz, metacity)
2. Install Embedded Video 1.2(I tested on Ubuntu from the repos)
3. Paste a link of an image in pidgin chat(i.e 
http://uppix.net/b/9/3/ddd634166e20e29c88e66d4654297.jpg)

What is the expected output? What do you see instead?
Expected:
http://www.sadanduseless.com/wp-content/uploads/2010/04/490.jpg
What I see:
http://uppix.net/f/d/2/0e49215f4e755649e280bde98cd11.png

What version of the product are you using? On what operating system?
1.2 on Ubuntu 10.04 with Pidgin 2.7.2devel

Please provide any additional information below.
It behaves as needed when there is no compositing window manager

Original issue reported on code.google.com by madura....@gmail.com on 24 Aug 2010 at 3:33