When disabling a raddatetimepicker the width will change from its preset width to a much larger width when you hover over it. Putting the following code and viewing it in ie9 will show the issue.
I am using 2012.1.411
I am using 2012.1.411
<
Rad:RadDateTimePicker
ID
=
"RadDatePicker1"
Enabled
=
"false"
Width
=
"170"
runat
=
"server"
></
Rad:RadDateTimePicker
>