gaps between two words in smartform

Hi Gurus,

I have started developing new samrtform,  it is working fine but i am facing some problem in print preview.  everywhere it is showing lot of gaps between the words.  Ex:  in table one of the column heading is "Material No",  but in print preview it is showing "Material    No".  not only in table in all the windows all the texts is showing same gaps.

Thanks in Advance.

Gopal