A couple of days ago I upgraded a QVS from SR5 to SR6. Today I've noticed that some QVW doesn't write DocumentLog.txt on reload (I'm looking in ...\QlikTech\Publisher\Qlikview Distribution Service\1\Log\20101020). The TaskLog.txt was written correctly. Yesterday, from 42 QVW, 13 have both logs and 29 only TaskLog.txt. Before the upgrade, only 5 qvw in 42 doesn't write DocumentLog.txt.