Same problem here. Majority of our access switches are 3750s We're running 12.2(55)SE3, SE4, SE5. We filter out the 3750s with transmit discards > 1000 from the High Errors & Discards resource .
Edit:
Here is the filter we applied.
(Nodes.Status=1 AND (Nodes.MachineType NOT LIKE '%37XX%' AND Interfaces.OutDiscardsThisHour > 1000))