YP-T9J: device connected then nor

[PoLaR]

I've a YP-T9QB, when i connect it to my portable i have a "Samsung YP-T9 connected" message and even it opens the window where i can choose what to do, but after few seconds it seems it doesn't connected anymore, nor there isn't in MyComputer. In Device List there is under Portable Device. When i physically disconnect it, windows plays typical sound of "device disconnected". On other PCs it works fine. I guess it's an XP issue...
I've WinXP Home SP2 and WMP10. I tried with firmware versions 1.27 and 1.68.

Sorry for my poor english... ;)

[PoLaR]

EUREKAAA!!! After 48 hours of googling, i found the answer!!!

http://support.microsoft.com/kb/911091.

Seems it's a known issue about authorizations of PlaysForSure devices. I hope it helps other people too!!