Yeah then it is perfectly fine if you are using system proxy. It downloads just fine then.what if proxy is changed for system with surfing tunnel etc? Does it downloads youtube videos then?
one thing else, a bit off topic, but i got no other choice. why ytpak.com and youtubes.pk don't support 1080p resolution of a video?
And as you said, I noticed that I myself used to watch in 1080p at ytpak but I guess you are right apparently, it is not showing 1080p now, maybe that is some temporary bandwidth issue.