Please describe the problem:
The contact personal information corrupts the date from 19xx (<1969) to 20xx.

Steps to reproduce:
1. select a date by typing it in with ex. 1967 or choose from calendar option
2. Save contact
3. Click on calendar option again => 2067


Actual results:
the entered date corrupts to wrong date

Expected results:
The entered date would stay

Does this happen every time?
yes

Other information:
Tested on Ubuntu 7.10 Gutsy Gibbon