problem with new mktime feature

Hi everyone; I´m having a trouble with mktime. It is not generating negative values since the OS was updated to "Linux version 2.6.7 (gcc version 3.2.3)". I belive php uses mktime from glibc, and when this library was changed, mktime with this new "stupid feature" stoped generate values that represent dates lower than Dec-31-1969. All my systems that store dates are using mktime, so the birthday fields are not working under 1969. I´m using PHP 4.3.8, and always upgrading ! How can i fix that? Example: <? echo date ("M-d-Y", mktime (0,0,0,12,32,1997)); echo "<br>"; echo date ("M-d-Y", mktime (0,0,0,1,1,1968)); ?> The result is: Jan-01-1998 Dec-31-1969 Thnx in advance, and sorry my poor english! [s] Mt