Bug: Users logging in, cannot upload video

We have a major issue with visitors logging in and not being allowed to upload a video. It seems that they are shown the signup page when, of course, they have already signed up AND they are logged in!

It is made even stranger because on some pages the username will show at the top with the private messages, and then click onto another page and it disappears - showing the generic Log In and Sign Up and Help links.

Has anyone else experienced this - if so what can it be.. please help!

Any help at all much appreciated....

What is your site url ?

its fine, I think we got it sorted!!

What did you do because it seems that mine is now doing that! I log in, but go directly back to the signup page....but it still shows me signed in at top.....but I can't upload a vid. any ideas?

I uploded two test videos and is working fine.

Do you have the problem with upload now ?