SQLCA.SQLCODE = NOTFOUND, STATUS = 0 ?

One of our programs is doing a fetch (the select below), sqlca.sqlcode = NOTFOUND but STATUS = 0, so rather than checking on STATUS we have to check on sqlca.sqlcode. This is very strange? Anybody ever seen this before? It seems that this problem(?) applies to a few more selects in our product, looks like its safer to use sqlca.sqlcode? SELECT cl_new_value, cl_est_value, cl_max_percent, cl_subscription FROM cl_credit_limit WHERE cl_score_start <= 250 AND cl_score_end >= 250 AND cl_account_type = "C" AND ( (cl_network IS NULL AND cl_technology IS NULL AND cl_subscription IS NULL) OR (cl_network = "C" AND cl_technology = "A" AND cl_subscription = "C" )) ORDER BY cl_subscription DESC Informix say this is a known bug on early versions, how early is 4.12 on an IBM in the UK?