(sorry for my late response, i was called away), It seems that only those text files are affected, but i'm not sure. the drives are divided in a c: and a d: drive. when i check de c: drive, all is well but if i check the d: drive , it only does a part of it.. then it seems to freeze, and much later it say's that de drive couldn't be processed.. ?? so it could be indeed one of the drives or the controller.. how can i check this ? greetz