hmmm, gotta find a way to remove the SEO addon...
session cookie set to true, but do i need to force it??
could this be something to do with moving from 123-reg to a new hosting company, did a full DB backup and FTP backup, imported to new hosting, input database. changed url & path details, cache sessions changed etc etc...
seems to be working apart from the adding products to cart...

the HTaccess file is sorted now, reverted to original from ZC 1.3.9g
...
also noticed when i goto admin>customers
got a few errors along the top :S
Code:
Warning: array_merge() [function.array-merge]: Argument #1 is not an array in /public_html/shop/ADMINAREA/customers.php on line 1099

Warning: array_merge() [function.array-merge]: Argument #2 is not an array in /public_html/shop/ADMINAREA/customers.php on line 1101

Warning: reset() [function.reset]: Passed variable is not an array or object in /public_html/shop/ADMINAREA/includes/classes/object_info.php on line 29

Warning: Variable passed to each() is not an array or object in /public_html/shop/ADMINAREA/includes/classes/object_info.php on line 30