Fix for issue:The page has been modified by another author When editing SharePoint site navigation

I have a problem in a particular site on a client's SharePoint (MOSS) installation. When I try to edit the Site Settings > Navigation > Navigation Editing and Sorting, and post any changed I get the following error:

 

The page has been modified by another author <time> where time is the exact time in which i have pressed Ok to submit the changes.

 

The anwser can be found in the following link:http://social.technet.microsoft.com/forums/en-US/sharepointadmin/thread/0b968acf-d069-420f-bbb5-0950c81d5066/

and this hotfix can also solve the issue:http://support.microsoft.com/kb/968859/