[PDF-Forms] Forms Open Outside the Web Browser

[Day, Tim G.]

Title: Forms Open Outside the Web Browser

Has anyone had the following problem with Acrobat 6?:

When our users (who have Acrobat 6) attempt to open certain forms (developed using Acrobat 4 or 5) using our Intranet, some of the forms (but not all) open in Acrobat rather than in the web browser. 

Thanks.