i had all these same problems and like alot of yall i have had enough of the nonsense with this mp3 player, the newest firmware 20070126140754437_YP-U2J_V1136.zip fixed my connection problems,using the "show details" button before applying the firmware the only file that was updated is the "boot manager" file, now when the player is plugged in you get the windows found it sound but you do not get the safe to remove icon anymore, i can plug it in and remove it now just like all the other usb stuff i use, this did completely fix the connection issue for me, i have the yp-u2jzw/xaa , i dont know when the new file became available, it had to be within the past couple of weeks as i have been miserablely trying to fix this connection issue, thanx for everyones input here in this thread cuz without it i would have already thrown this player in the trash,,, thank goodness it was a gift cuz i was thinking if this is how mp3 players work i dont want one, this lil player sounds great and has always sounded great my only problem has been with the connection issue, i tried the roll back wmp that didnt help me any so what i did also do along with the new firmware update is reinstalled wmp 11 , i am not sure this had any effect i know for sure the new firmware update fixed my connection issues and now i can use my player with winamp mediacenter and wmp which ever i prefer but after u pick a player to use thats the one u will need to keep using, but that is another topic,, i hope this update fixes everyones player the way it did mine. sorry for typing on and on but since the connection issue is now fixed i had some free time
thanx again for everyones help on this subject.
dufusizer