I am sorry to hear that you think we are not able to work with turkish culture settings. We have a complete test configuration running with such settings and I am not aware of actual problems. Can you please send me some more information about your problems? Our next major release is close and I would like to include such fixes asap.
the Telerik team
Follow @OpenAccessORM Twitter channel to be the first one to get the latest updates on new releases, tips and tricks and sneak peeks at our product labs!