We recently purchased (< 1 yr) 17 of these laptops. Since then, we have had 2 hard disk failures and 2 screen failures where they have had to replace the motherboard. These laptops are used extensively in the field. Has anyone else had experience with this model? Is there a reliability problem with these laptops? We have had good experience with Toshiba laptops in the past, but this seems like a high failure rate. Any input would be appreciated. Chris Bennis