Same thing here. But haven't noticed any difficulties because of it (yet). I run FlightSimX at 1680x1050, 95% maxed with no problems.
Win 7 Home Ultimate(32)
Samsung T260 via DVI @59
E8400 quad OC 2.93, with 4gb(PC2 6400)
I read sometime back the actual rate is 59.93, but it gets listed in Windows 7 at 59.