Q: download iTunes U content err=403

Hey,

I got a really frustrating problem (after to get it working to even login in here on support communities...)

I want to watch those WWDC Videos and Sessions to inform me about some programming things, but I only can download a few of them. First I had the problem to even download these or to get there (not the right quicktime player installed error) fixed it by restarting itunes in 32bit mode, but doesnt really help.

Those downloads get in the download messenger error 403 (which menas I think permission denied in Apple error codes as well) But why? I am logged in.

Any help? I have no idea what I could do now. Sometimes the downloads get the -48 errorcode, but havent found anything about that.

Thanks!