Code to handle the case where we have an ActiveX plug-in that was added back in http://trac.webkit.org/changeset/39115 combined with code to handle the case of disabled plug-ins in http://trac.webkit.org/changeset/39969 to create a bad effect. Due to the combined effect of these changes we'd ignore the class ID and MIME type entirely, and render plug-in content as HTML.
* STEPS TO REPRODUCE
1) Disable plug-ins
2) Go to http://www.ilounge.com/ or http://www.talkingpointsmemo.com/
3) Reload page if necessary
Banner ads or sometimes embedded Flash content on those websites contain garbage text rather than being rendered blank.
*** This bug has been marked as a duplicate of 23538 ***