Thank you for writing.
I am writing to inform you that this version of our suite is no longer supported. We do support versions up to one year old. This is why, I would highly recommend upgrading to our latest version. If you have any questions, during the upgrade process, do not hesitate to contact us.
I hope that you find this information useful.
the Telerik team
Q1’11 SP1 of RadControls for WinForms is available for download
; also available is the Q2'11 Roadmap
for Telerik Windows Forms controls.