Virtuemart checkout redirect

I have a problem within the checkout process of vm. When going through the checkout, after the 2nd step, i get redirected to the homepage which makes it userunfriendly. When i disable sef, it works fine.
Domain: www.bodyplanet.de
SEF v 2.4.3 all redirects disabled
vm v 1.1.6
joomla 1.5.22

Any help will be appreciated

Are you sure all redirects are disabled? Do you have sef_ext.php for Virtuemart or not?

yes, the sef_ext is in components/ com_virtuemart and all redirects are off, l just double checked

OK, then please send me the URL where redirect happens, FTP info and Joomla admin password and I will take a look.

thanks for your help. I have sent the access details by mail.

Good morning,
did you get my e-mail with the access details?

If not I send it again.

Thanks and greetings