php cookies not get droped !!!!

Hai, i installed php4 on redhat6.2 its working. but when i am dropping a coockie with less than 12 hour timing it does not seems to be woking but if i set the time more than 12 hours then it works!!!! i couldn't understand the problem. can any one tell me what could be the problem. thanks in advnce to everyone. pal _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.