Shoutbox permission error.

I log in on YC normally, I get the message that says I've logged in successfully, I get redirected to the forums, and it shows that I am logged in properly (I see my messages on the top-right corner), I get this error instead of the shoutbox:

[Today 1:20 PM] System Response: You do not have permission to use the shoutbox.

Now, if I click on the "Forum" link once, I get redirected to the forum page, but it shows I am logged out (and thus no shoutbox is visible), and if I click it again, it shows I'm logged in and the shoutbox is working.

I am using Mozilla Firefox 2.0.0.16 (but this also happens from Firefox 3.03 too), Microsoft Windows XP Professional, no SP's installed as far as I know.

Trying logging out and back in. It could be a cookie error?

This happened to me once before I believe, but it was quite a few months ago. I did tell Mike at the time.

I've no idea what could cause this issue. Have you tried reproducing the described behaviour while running Firefox in Safe Mode?

This happens to me sometimes. I usually just sign back in and it fixes itself.

I don't need to sign back in - if I just click the "YoungComposers Music Forum" link it shows I am logged in properly (although before it showed I was logged out) and the shoutbox is working fine.

No, I haven't tried running firefox in safe mode. It could be a cookie thing, but YC is the only site where something like that happens (and in particular, just the forum and just with the shoutbox) and it does work 100% properly after I click on the link.

Have you tried clearing all cookies for youngcomposers.com? Again, having dug up the specific lines of code which determine whether a user has permission to use the shoutbox, I can't think what the problem might be, but that's really I can suggest. I'd be curious to know if anyone other than juji experiences this issue on a regular, reproducible basis.