Description of problem:

In Firefox 4.0.1, some images are corrupted (maybe 30%).  This has been reported in the firefox forums:

http://support.mozilla.com/en-US/questions/824337

A particularly bad example website is facebook.  But it happens on numerous sites, though not all.  Looking through a facebook album with corrupted imaged and the firefox error console open produces:

Warning: Error in parsing value for 'opacity'.  Declaration dropped.
Source File: http://www.facebook.com/photo.php?fbid=10150205577034538&set=a.164766204537.120462.545789537&type=1&pid=7216754&id=545789537
Line: 0

Warning: Error in parsing value for 'filter'.  Declaration dropped.
Source File: http://www.facebook.com/photo.php?fbid=10150205577034538&set=a.164766204537.120462.545789537&type=1&pid=7216754&id=545789537
Line: 0

I don't know if these are related.  This problem also occurs in 'firefox -safe-mode' so is not related to extensions/plugins.


Version-Release number of selected component (if applicable):


How reproducible:

On certain websites (facebook, twitter), 100%.  Others like Google images, there is no corruption.  Trying to find a permanent link to an image with such corruption.


Steps to Reproduce:
1.  Look at facebook.
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