Acrobat Suite 5.0 try to update

Hi,

I have Acrobat 5.0 (the suite, not reader) install and it always asking access to the Internet access to make an update of himself. I put the "Check for update" in the preference at manually and I disable Web buy. I even make an update to by supposing that he will stop asking! ... with out any success!

What else ???

P.-S.: We have many of the same installation with out this problem.

Thanks in avance
Vince