You mentioned that the form has been "extended" for Reader using Acrobat
Pro. To eliminate this as a possible contributing factor, can you test a
copy of the form with out it being extended and sign it (multiple times)
using Acrobat Pro to see if the file size increase is the same?What
Target Version of Reader did you set for the form (in Designer)?Can you
post a copy of the form?RegardsSteve