Are you sure the objects are not locked, on a locked layer, or on a master page?
If not, we need to know the version of InDesign, and your OS, and wheter the problem is affecting all files, just one file, all old files, or all new files.
I have already seen these solutions on other forum but this is not my case . I can't move the blocks on main page or gabarit page.
I am with Indesign CS5 on Windows.
Since 01.14.2015 all new or old files.
This is a Windows 7 Professionnel 32 bits.
Think you i'm going to the link to test.