I have the same problem others have been having where the cart returns saying it has been timed out when you finalize your order...
It is a problem with how I have pointed to my secure site because it does work when I disable ssl in the configure.php file.
But like everyone else it returns to the cart and even though the charge goes through the viaklix system, ZenCart does not recognize the transaction has been completed. It leaves your item in your cart and does not add the information in the users account.
Most people seem to be having this same problem. (not only with zencart but I checked OsCommerce forums and people have had this problem with that cart also)
Is there anyone out there who has this working properly and knows the fix for this?
It seems that someone must have this figured out and I know many people are hoping for a fix to this.