Checkered Background appearing on Adobe PDF Word.doc File...?

[CFA-341]

Created a MSWord document on my iMac and saved it as a PDFile using Acrobat Adobe a couple months ago. 

Opened the PDF version this morning and each page was covered with a gray checkered pattern that I was unable to get rid of -- any ideas/suggestions as to what caused this problem and just how do I eliminate this pattern from each page...? 

Thanks for any assist.  CFA-341

[try67 · Accepted solution]

Go to the Edit menu (might be the Acrobat menu on a Mac) - Preferences - Page Display and tick off "Show transparency grid".

[CFA-341]

      -- thanks for the tip - worked like a charm!

            -- for some reason, the grid preference you described seemed to activate itself...  had previously accessed this file with no background pattern - then all of the sudden - it's there a couple wks later...

[Rob Pfaffmann]

It very frustrating for upgrades to change defaults settings like background transparency. It took me a half hour to find it while on deadline. Adobe please think about your users when changing setting defaults!