Too much options possible?
Create a lot of product attributes in KonaKart. The products_quantity table has a products_options column which gets filled with values like 69159{70562}69172{70814}. These are the ids of the product options belong to a product.
The products_options column is of type VARCHAR(128). This means that the length of these strings inserted in this column (which may have lengthy id's of product_options) may exceed 128 chars at a point if one were to have lots of product options. We had to resize this column to accomodate our needs, but this doesn't scale well for huge systems I think. I suggest to size up this column in a next release?