Adobe Acrobat 4 question

[Paco21]

Why is it that some documents that look fine in acrobat 3 look awful in acrobat 4. In acrobat 4 the text looks really rough and unantialiased and the letters do not lie on a straight line. Do i need some adobe fonts or what?

 

[Mday]

there were minor changes in formatting, i don't recall off hand what they were.