diff --git a/doc/forum/Benefit_and_drawback_of_new_unlocked_file_mode_V6_vs_locked_mode.mdwn b/doc/forum/Benefit_and_drawback_of_new_unlocked_file_mode_V6_vs_locked_mode.mdwn
new file mode 100644
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+++ b/doc/forum/Benefit_and_drawback_of_new_unlocked_file_mode_V6_vs_locked_mode.mdwn
@@ -0,0 +1,4 @@
+Someone wrote: "Unlocked files are more difficult to synchronize (to check for
+modifications and to synchronize throught multiple remotes)."  Does it mean new
+unlocked file mode V6 takes more time to find modifications?  If not what is the
+drawbacks of this new unlocked file mode?