My clients site has been experiencing a number of Cart Validation Errors recently, but I have been unable to replicate (and fix) them.
Every single one of the errors is 'Size', and has 'Mozilla 4.0' or 'Mozilla 5.0' listed as the first Agent.
I am using the standard cart and the standard checkout (for now anyways).
The site domain is http://campbellssweets.com
Any insight into what might be causing this would be greatly appreciated.