I discussed Opportunistic Locking in the following tips:
3108 » How do I configure Opportunistic Locking on Windows NT and Windows 2000?
9317 » Tuning Opportunistic Locking.
0130 » Is there a delay when saving documents to a Server Share?
1447 » How do I run old MS-DOS database application on my network?
9316 » How do prevent Windows clients from requesting an opportunistic locks on a remote file?
When the redirector unlocks data in response to an unlock request, the action should be immediate, by default.
If you experience a delay, insure that the UseUnlockBehind Value Name, a REG_DWORD data type, at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters is set to 1.
If UseUnlockBehind is set to 0, the unlock-behind optimization feature is disabled.
