Thank you for contacting us.
This is a known bug with our charting component - the Title part of the Axis is not properly visualized. The bug is already fixed in our development version and the fix will be publicly available for the Q3 2011 Service Pack 1 release, scheduled for December 21st.
Currently the only possible workaround would be to position your own TextBlocks within a grid layout to simulate axes titles.
I hope this information is useful. Let me know whether the planned Service Pack fits in your schedule.
the Telerik team
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