We are not aware of any issues with the latest versions of the control under MAC. Could you try using the Q2 official - 2011.2 712 or the Q2 SP 1 - 2011.2 920 and let us know if the issue is still present?
If the issue has persisted, we would appreciate some more details on the behavior you are observing and the steps to reproduce it.
the Telerik team
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