Comment 8 for bug 473677

Here is the site I tested:
http://legisweb.state.wy.us/statutes/constitution.aspx

Same NS_ERROR_DOM_SECURITY_ERR error with same security code.
I can confirm this on Firefox 3.5.4:
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4) Gecko/20091028 Ubuntu/9.10 (karmic) Firefox/3.5.4
and
Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.1.4) Gecko/20091016 Firefox/3.5.4
and r26510
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5pre) Gecko/20091031 Ubuntu/9.10 (karmic) Shiretoko/3.5.5pre

This seems to be fixed in 3.6 Beta 1 Build 3

Ubuntu Bug:
https://bugs.launchpad.net/bugs/473677