For those of you that use a PocketPC, MS has released ActiveSync 3.8...
http://www.microsoft.com/downloads/details.aspx?FamilyID=d2645c21-8a85-45a2-8d13-653beb6cdddc&DisplayLang=en
No details concerning enhancements/fixes/etc yet. I installed over AS 3.7.1 on my XP Pro SP2 machine and subsequently synchronized my iPAQ 5555 via USB without any problems. It seems a bit faster, but that is an entirely subjective observation...