Quick Launch links randomly disappear SharePoint 2010

Issue:

Recently a client had complained that the navigation items under current navigation (quick launch) in a sub site where disappearing. The user was removing them and it looked as if they were just dropping out. If the user went back and added those items again, then they appeared under quick launch


Resolution:

This solution posted at [1] seem to help a few so will try this fix:

1. On the parent site of the site having the problem, create a “dummy” document library and leave the “Display on Quick Launch” option set to “Yes”. Once the library has been created, remove permission inheritance for the document library and the problem will be resolved for all sub-sites underneath this parent.

Yet to try out this option as the client had just added the navigation items back in, waiting for this to happen again so can apply this fix. Will update this post if Option #1 works for me


Ref:
 [1] http://social.technet.microsoft.com/Forums/pl-PL/sharepoint2010setup/thread/4439a80d-8e3e-4795-a21f-e63c221ed06b