I have 2 WD 100G ATA100 7200RPM drives running off a Promise card under win98 SE. When I tried to encode a a source file from one 100G drive to a destination file on the other 100G drive DVDMF encodes for a while and then locks up the system. If I use the Ligos LSX35 or TMPGEnc with the same source and destination files as DVDMF everything runs fine. Both drives pass all tests. I have uninstalled and reinstalled DMDMF and removed ulead32.ini and no change. Any thoughs as to what DVDMF problem is?