I don't know how widespread the problem is but I've found at least one model that is impossible to comment on. I just get a scaled down ("ugly-fied") version of the product page with this errormessage at the bottom of the product description: " Critical: Unknown column name (Unknown column 'model_owner' in 'where clause'). Halted Halted... " The model I tried to comment on is david_alan's "Empty Ring"