How to stop redirect to Log-in page? [Solved]

Hi

I've been adding lots of new articles to my site without a problem, however this morning all of the new articles have started redirecting to the front end Login page. Even after logging in, I don't see the expected article just "You are currently logged in to the private area of this site."

I'm using FLEXIcontent version 1.5.4 stable (r558) (and also sh404sef if that's relevant).

The last article added yesterday works OK
www.tenbyvisitorguide.co.uk/Things-To-Do/Battlefield-Live.html
an example of an article added this morning which incorrectly redirects to the log-in page is
www.tenbyvisitorguide.co.uk/Things-To-Do...-walks-of-tenby.html

All of the articles have been published.

Does anyone have any suggestions?

Jon

I can only think of a few test to do.
1. Create a new submit article menu item and test.
2. Clean of sh404_sef, and temporarily disable it
3. Disable sef completely and test.
4. Do you have flexiaccess installed?

If you changed nothing maybe some other administrator did?
You installed any new component? The installer some times do some operations ..

Regards

ggppdk, thanks once again for taking the time to have a look at my problem.
I did as you suggested, and removed sh404sef, but this didn't help, but at least enabled mr to eliminate it from my thoughts.
In the end, I was able to identify that one category was causing the problem and simply created a new category and deleted the problem category. I still don't know what caused the problem, but at least the site is working again.
Jon

Great
If it ok can you edit your title post to add [solved]
Regards