I have an issue at the moment where random products are being added to the shopping cart. They are being added when the user adds a legitimate item to the shopping cart. The problem appears random in that sometimes only 1 extra product will be added but other times there may be 2,3 or I have seen up to 11 extra products being added.
Additionally, I have noticed that the line totals for items in the cart are showing as doubled i.e. a product costs £21 and there is only 1 in the cart but the cart total is £42
Any ideas?
UPDATE: As an update, the issue is in the database somewhere. We have a test site which runs on a different database. If I move the database from the affected site to the test site then the test site also has the same issue