There was a bug we introduced with the Q2 Release in our import from docx functionality. The result is that scaled images are not always imported form docx with the right size. Fortunately the issue is already fixed and available in the LIB.
I hope this was helpful, please don't hesitate to contact us if you have more questions.
the Telerik team
Register for the Q2 2011 What's New Webinar Week. Mark your calendar for the week starting July 18th and book your seat for a walk through of all the exciting stuff we will ship with the new release!