also, use HD Tach and run the quickbench option on your kingston. the Random Access time should be around .8ms. if it's not then either your card reader or your USB ports are messed up which is corrupting your data.
get hdtach here:
http://www.simplisoftware.com/Public/index...?request=HdTach
get hdtach here:
http://www.simplisoftware.com/Public/index...?request=HdTach