Palm software doesn't support anything above 128 bit certificates. By default GoDaddy gives 256 bit certificates. It is not a well know issue but you can confirm in by calling Palm (although it took me four hours to get it out of them) or here's a couple of sites that mention the issue;
http://forums.palm.com/palm/board/message?board.id=activesync&message.id=4545http://forums.palmone.com/palm/board/message?board.id=activesync&thread.id=1411To get the 128 bit compatible certificate you'll need to contact GoDaddy and have them give you the directions to make the certificate.
Good luck to you,
tenaj