Microsoft Knowledge Base Article
883258 contains the following summary and introduction:
After you install Microsoft Windows XP Service Pack 2 (SP2), a Bluetooth device that previously functioned correctly in Windows XP SP1 and that supported Bluetooth wireless devices may not function correctly. This article discusses how to troubleshoot:
• Bluetooth device detection issues. • Service detection issues. • Device detection and connectivity issues.
This article answers the following questions about troubleshooting your Bluetooth device after you install Windows XP SP2:
What can I do if my Bluetooth devices do not function? What can I do if a Bluetooth device is not detected when I add the device? What can I do if I experience a slow connection with the Bluetooth device or the device is disconnecting? What can I do if some of the Bluetooth devices features no longer function? What are some things to consider if I have problems with my Personal Area Network (PAN) connections? What are some things to consider if a Bluetooth device cannot find its associated services? What can I do if my Bluetooth device loses its connection?