The rest of the internet is fine and the content is school related ( scientific) so I doubt they would be blocked as I had access to them before.
Does the problem apply to all youtube videos though or just some? Try some other simple ones to check if they cause the same issue. It may the format of those specific videos that might have been changed (though I'm just guessing).
Why aren't youtube videos playing? They were fine a few days ago but now its just comes up with a message saying " this may be blocked or unsupportive" and my goodybag hasn't run out yet!!! Please help I'm really confused to what has happened
have you tried uninstalling (deleting) the youtube app and downloading the latest version and installing that one?
Also you're probably aware that youtube themselves are (along with other online service providers) tweaking their cookie and tracking formats? You can blame google for that ..lol
Sorry that I wasn't clear with my answer I have tried other videos too and this applys to all none of them work.
Did some googling and found this http://supportforums.blackberry.com/t5/BlackBerry-
I just tried uninstalling it and reinstalling it again but no luck it didn't work. Thankyou for the help though
I found this thread with a similar problem and maybe the solution on that would be the answer. Try that http://community.giffgaff.com/t5/Help-Ask-the-comm