Make sure it is not a permissions corruption issue. This blog details it:
http://www.beyondweblogs.com/post/SharePoint-security-access-denied-permission-corruption-problem-Edit-Item-and-Access-Workflows.aspx
Basically the PermMask field is missing the attribute
RenderXmlUsingPattern. I have
Hi Wilson/Paul,
I've already run into the issue with SharePoint being unable to get presence,
membership and My SharePoint Sites when using AD groups. I'm confident that
someone will address this oversight in the next version.
To get around this I was obliged to add users individually for
