I recently bought another 1 GB 2X512's of ram installing an filling up all the slots I soon experienced windows errors in game freeze ups and all and all buggy behavior. After removing the Ram in the last slot all ran fine. I rotated all the ram and found that no matter what ram went into that 4th slot I would experience problems soon after. And no matter what ram I used all ran fine when only 3 slots where used my feeling Dead 4th ram slot would these symptoms be synonymous with a dead ram slot?