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Can't replicate your problem, unless... In the Change date and time settings... box, you clicked on the Change time zone... button, and then...
I Spoke Too Soon... Turning DST back on caused the error message to reappear. I've now turned it off and will leave it off.
Turned Off DST, Turned On DST--Now OK This problem was driving me nuts with a brand new installation of Win7 Home Premium and running...