I committed the fix today:
1303767 3/22/12 9:07 AM 1 ddumont Issue obtaining document of the util iframe in IE.
I'm not sure what this JIRA is for. But it looks like my commit fixed it for you, so I'll close it as resolved.
Hi Dan, yes, that's fine - as requested, it was for tracking, visibility and so you could attach patch if necessary. I should have sent you link directly for your information, but I added link to message with other details.