I've got a 10.2.6 box that when it copies large files (5-8GB) it will eventually die. This last time I got the end of the transmission with ethereal from the samba server. I did some searching for the "Unknown DOS error (9e)" but couldn't find anything helpful Right after the error is logged the smb share is dumped off the desktop of the Mac, but samba still shows it connected. If I clear the connection from the samba server it can login and do the same thing again, but otherwise the Mac has to reboot. Anyone else seen this ?? 170.957153 1.2.3.4.127 -> 1.2.3.4.135 SMB Open Request, Path: \._Hard Drive_asr.dmg 170.957424 1.2.3.4.135 -> 1.2.3.4.127 SMB Open Response, FID: 0x29ee 170.957816 1.2.3.4.127 -> 1.2.3.4.135 SMB Transaction2 Request FIND_FIRST2, Pattern: \._Hard Drive_asr.dmg 170.958063 1.2.3.4.135 -> 1.2.3.4.127 SMB Transaction2 Response FIND_FIRST2, Files: ._Hard Drive_asr.dmg 170.958337 1.2.3.4.127 -> 1.2.3.4.135 SMB Read AndX Request, FID: 0x29ee, 512 bytes at offset 0 170.958417 1.2.3.4.135 -> 1.2.3.4.127 SMB Read AndX Response, FID: 0x29ee, 512 bytes 170.958775 1.2.3.4.127 -> 1.2.3.4.135 SMB Locking AndX Request, FID: 0x29ee 170.958918 1.2.3.4.135 -> 1.2.3.4.127 SMB Locking AndX Response, Error: Unknown DOS error (9e) 170.959245 1.2.3.4.127 -> 1.2.3.4.135 SMB Close Request, FID: 0x29ee 170.959496 1.2.3.4.135 -> 1.2.3.4.127 SMB Close Response -- ==========================Daniel Wittenberg Senior Unix Admin University of Iowa - ITS