Could you try to explain this again please, I am not sure I understand your problem. Possibly you could include a screen shot if it helps to explain the situation. If English is not your first language maybe write the question in both English and your first language.

Some buttons on the Add-on bar are not movable because: *the Extension developer has not changed their buttons to be compatible with the Add-on Bar; they are still being treated as "Status Bar" icons *some Add-ons/Extensions may be interfering with re-arranging some buttons in the Add-on Bar; this possibility is still being researched The icons affected (unmovabe) are grouped with a gray background when in Customize mode. There have been a couple of bug reports filed on the issue ('''''NOTE: Do not post in the following, just read the developer comments'''''): *https://bugzilla.mozilla.org/show_bug.cgi?id=616016 *https://bugzilla.mozilla.org/show_bug.cgi?id=637154 Also see: *http://forums.mozillazine.org/viewtopic.php?f=23&t=2091461 *http://forums.mozillazine.org/viewtopic.php?f=23&t=1951751&start=435 *http://forums.mozillazine.org/viewtopic.php?f=23&t=2107973