A couple of weeks ago I was tweaking the running services in my Vista installation and now can't change my desktop background or view any pictures as large icons. In extra large they display fine, which makes me think my machine is stuck in some sort of reduced functionality mode.
I've tried reinstalling my graphics drivers, clearing out my icon cache, reassociating images, and resetting all services to their defaults but nothing has sorted it out. Unfortunately I don't have a system restore old enough to go back to.
Any ideas guys?
UPDATE: I just found I can change the backdrop to BMPs but not JPGs. A quick Google popped up a couple of things, but I haven't had time to properly investigate.