I just found another post by rewording my question and found a solution to
the problem. If you re-create your signature using Shift+Enter, instead of
Enter, after each line you should find that your signature will not be
double-spaced… not sure if the logo problem will still exist.

Are you running Windows XP?

“Bobok” wrote:

> I created a business signature for my emails, containing the company logo and
> using “rich text” format. When I compose an original msg, the signature
> displays correctly. However, when I forward or reply a msg that was composed
> in plain text or HTML, my signature displays incorrectly–double-spaced and
> minus the logo. I formatted my messages to always use my fonts when replying
> or forwarding. Can anyone help? Thanks very much.

http://www.pcreview.co.uk/forums/re-email-signature-format-changes-forwarding-replying-why-t2395060.html