I think thats somthing that has bin a problem with windows forever now is the active desktop somtimes shuts down or whatever it does and you lose your settings such as wallpapers and what not , I dont think theres a person here that cant say that hasnt happend , With the older windows like 98, ME comes to mind , I used to always have to restore the active desktop upon reboot , just a bug im guessing , never really figured it out .
Have you had to do a hard reboot recently ? that could have coused the loss of settings .
Athlon 64 2800+ clawhammer 512 kb
MSI k8t neo mobo
MSI 6600 gt
samsung 512 mb pc 3200
WD 80 gig ata100 7200 rpm
Onboard sound / realtek 5.1 based sound
7 year old cheap *** 17\" monitor but looks great , im surprised its still running , its bin through 5 computers so far.