CommandButtons moves to another place in office 2010

Dear All,

Have a xls-file about 20 commandbuttons in Row1 (frezzed) for all kind of
actions.
Now we insttalled Office 2010 and comverted my xls-file > xlsm-file.
Opening, editing and saving cause the commandbuttons to change position an
size always to the left and upwards and becomming smaler size.
Have the same problem with a Combobox (Form-object)/

Command-property set as 'Move and Size with cells'

What's causing this strange behaviour?

Filip