Fax Number Not Displaying

Outlook XP has suddenly stopped displaying all contacts fax numbers in the
"select names" window when attempting to "send new message" to a contacts fax
number via the fax console.

I have tried updating windows xp & office; I ran detect and repair and found
nothing; I ran a scan for malicious software but found none; I have confirmed
that the "Fax Mail Transport" account seems to be present and properly
configured; I have checked the "Fax Printer Configuration" properties which
seem to be ok; and I repaired MS office xp installation... all to no avail.

Any ideas would be appreciated.