Invalid Signature (how to report a (potential) bug ) ?

Hi,

we have a PDF document signed via our IE browser (CAPICOM).

When we open the document Acrobat (Professional) - version 8/9 - tells us the document has been modified since the signature was placed - which is of course not true.

When we open this in another product (Nitro Reader) this product accepts the signatures and tells us the document is valid.

We believe this could be a bug in Adobe Reader, so we can we open a "bug" report to get some help about this ?

FYI: The /Sig dictiorant is as follows:
/SubFilter /adbe.pkcs7.detached
/Name (SERIALNUMBER=660...)
/Filter /Adobe.PPKMS
/M (D:20090302134456+01'00')
/Type /Sig
/ByteRange [00000000 00154554 00163772 00000444 ]
/Contents <30820CAD06...>>

H.