I created PDF/A document with “Signature visible in pdf file” optional.
2. step
I verify compliance document in Acrobat 9.0.0 with PDF/A-1b standard with result “Font (Helvetica) not embedded". Document is written in Arial. Only signature include font Helvetica.
Sorry I don't have the answer, however I'd like to know how you rate PDF/A created with PdfCreator? Is it good? Is it standard compliant ? Any bugs with it?