Oups sorry I replyed too quick.
Can you disable sef and see if this still occur and if so, please post the url here.
- Need help? Post the URL of the related page (eventualy as confidential info), it will help solve your issue faster.
- An error, notice or warning? report the exact message including the line number
- If you get a white page , enable error reporting and / or check your server error logs.