Linux (1999-10-19-08 M11) Win NT (1999-10-19-08 M11) Mac (1999-10-19-08 M11) Steps: 1. Launch Messenger 2. From the Edit menu, select Preferences to open the Preference dialog 3. Select Window Sttings from Mail and News 4. From the Window Setting pane, I try to select each of the check-box, 5. Click OK to close the Preference dialog 6. Repeat step 1 to 3 Actual result: The selection was not retained Expected result: The selection is retained and enabled This feature may not be implemented yet. This happens to all 3 platforms.

You're right -- the feature isn't enabled yet. In addition to 6567, other related bugs are 10875 and 10876. *** This bug has been marked as a duplicate of 6567 ***

Mark it Verified/Dup.