BB Bold 9000 :: Shows Wrong Numbers Under Names In Contacts

It is showing wrong numbers when I search for contact name in the contacts. It shows the wrong number but under the name I am searching for. 3-4 times I called wrong person because my bold showed and dialed a different number for the name I am searching for. I don't know how to solve this.When I type the name of the contact I'm looking for my Bold 9000 displays the list of contacts as usual but the phone number of the contact is wrong. I have to scroll to another name on the list then scroll back to the name I was looking for in order to get the phone to display the correct phone number. I have been using this phone for quite some time and had always worked fine. This problem began yesterday. I do not sync the phone (never have, probably never will). I have not made any changes or added any software. The only thing I have done recently is added more contacts.I have also noticed that it is slower than usual when searching for names and it takes a long time for it to recognize that I have typed more charcters in the contact name before updating the list of results.