SECURITY <SPC>, USERS, END MERGER TALKS Security Pacific Corp and <Users Inc>, a credit union data processing concern, said they have mutually agreed to withdraw from further merger negotiations. Users said that since it signed a letter of intent to merge with Security in November, it has received a strong show of support for continuing the credit union ownership of the company with credit unions committing themselves to purchase additional Users common. Users also said it is in the strongest financial position in its 24-year history.