Byc moze jest to wina wlasnie autopatchera i ktorys patch robi Ci cyrki z activesync'iem,
wiec mozesz odinstalowac autopatche i sprobowac na czystym sys z sp2.
A reinstalka windy to ostatecznosc

Wymagania systemowe dla Microsoft ActiveSync 4.2
* Obsługiwane systemy operacyjne: Windows 2000 Service Pack 4; Windows Server 2003 Service Pack 1; Windows Server 2003 Service Pack 1 for Itanium-based Systems; Windows Server 2003, Standard x64 Edition; Windows XP Media Center Edition; Windows XP Professional 64-Bit Edition (Itanium) ; Windows XP Service Pack 1; Windows XP Service Pack 2; Windows XP Tablet PC Edition