You may already know this, but the WPF and Silverlight teams are the same team, not separate.

>Ah: the article I referenced was specifically about WPF DataGrid. A member of the Silverlight team has confirmed the issue with XO and Silverlight, and said something about a future release. But I see you found a workaround. I think I'm looking forward to your next steps more than you're looking forward to mine. <s>
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>Hank